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Add instance-var-assign diagnostic for assigning to instance variables via the class - #4669

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nitishagar:class-instance-var-assign-3750
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Add instance-var-assign diagnostic for assigning to instance variables via the class#4669
nitishagar wants to merge 2 commits into
meta:mainfrom
nitishagar:class-instance-var-assign-3750

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@nitishagar

@nitishagar nitishagar commented Aug 26, 2026

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Summary

C.instance_var = 3, where instance_var is a class-body-declared, annotated, non-ClassVar field, was silently allowed. The mirror direction (assigning to a ClassVar through an instance) already errors, and the issue asks for a rule covering this direction too.

This adds a new instance-var-assign diagnostic, off by default (Severity::Ignore) and enabled in the strict preset, following the same shape as method-assign: detection keys off the authoritative ClassFieldInner::ClassAttribute origin (annotated and not ClassVar), threaded as a provenance flag on ClassAttribute::ReadWrite to the attribute-write chokepoint check_class_attr_set_and_infer_narrow, which emits only for class-object writes (instance_class.is_none() && class_base.is_some()). The existing type-compatibility check still runs, so an incompatible value reports both this and bad-assignment.

Off by default matches ty's current documented semantics (body-declared instance variables may be assigned via the class there; only instance-only variables error) — see the discussion linked in the issue. If maintainers prefer on-by-default symmetry with the ClassVar mirror rule, that is a one-line severity change and this PR can carry it.

Fixes #3750

Test Plan

  • Positive tests with the rule enabled: issue repro, inherited field via subclass, annotated-with-default field, generic class field — each reports instance-var-assign.
  • Negative tests under default config: same code stays silent; unannotated x = 3 via class, ClassVar via class, instance writes, @staticmethod assignment, and reads are unaffected; # pyrefly: ignore[instance-var-assign] suppresses.
  • Website error-kinds documentation added; full test.py fmt+lint+tests green.

AI-generated: this PR was prepared by an AI agent (with human review before submission), per the repository's AI contribution guidelines.

@meta-cla meta-cla Bot added the cla signed label Aug 26, 2026
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meta-codesync Bot commented Aug 26, 2026

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This pull request has been imported. If you are a Meta employee, you can view this in D117481537. (Because this pull request was imported automatically, there will not be any future comments.)

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github-actions Bot requested a review from stroxler August 26, 2026 09:19
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@github-actions github-actions Bot added the stale label Sep 10, 2026
stroxler
stroxler requested changes Oct 29, 2026
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Thanks!

Merging needs a rebase. In addition, I think there are a few behaviors to adjust before we merge this:

  • Narrowing changes even when the diagnostic is disabled or suppressed. Class-attribute assignments stop narrowing, introducing unrelated downstream errors under the default preset.
  • Valid metaclass-instance writes are rejected. Custom metaclass fields and assignments such as C.__name__ = "Renamed" incorrectly trigger the diagnostic.
  • Classmethod-created attributes are misclassified. cls.x: int = 0 is mistaken for a class-body instance-variable declaration.
  • Descriptor-containing unions bypass the rule. The DescriptorRead → into_declared conversion drops the provenance flag, so qualifying assignments escape the diagnostic.

@rchen152 rchen152 removed the stale label Oct 30, 2026
@nitishagar
Add instance-var-assign diagnostic for class-object writes (meta#3750)
12c73e3 
Assigning to an instance variable via the class (`C.instance_var = 3`,
where the class body declares `instance_var: int` without `ClassVar`)
silently succeeded, even though such fields are meant to be assigned on
instances — the mirror image of the existing rule that rejects instance
writes to a ClassVar.

Add a top-level, addressable ErrorKind::InstanceVarAssign, off by default
(Severity::Ignore) and enabled in strict mode (Preset::Strict), so default
checking behavior is unchanged (matching ty) while the diagnostic remains
independently suppressible via `# pyrefly: ignore[instance-var-assign]`.

Detection keys off `annotation.is_some() && !is_classvar`, threaded as a
provenance flag on `ClassAttribute::ReadWrite(Type, bool)` from the two
ClassAttribute conversion sites to the single attribute-write chokepoint,
which alone knows whether the write goes through the class object rather
than an instance. The error is emitted before the type-compat check, so
an ill-typed value reports both this kind and bad-assignment.
@nitishagar
Fix instance-var-assign behaviors flagged in review
a454a79 
- The diagnostic is now purely additive: it no longer suppresses narrowing,
  so enabling it (or the strict preset) cannot change inference for code
  that assigns class attributes. Under the default preset behavior is
  byte-for-byte what it was before this feature existed.
- Writes that resolve through the metaclass are metaclass-instance writes
  and are no longer flagged: a class object is an instance of its
  metaclass, so assigning metaclass-declared fields (including __name__)
  through the class is valid. The provenance flag is now recorded only on
  the class-attribute lookup path.
- Attributes created by assigning through cls in a classmethod are class
  attributes, not class-body instance variables, and are no longer flagged.
- Descriptor-containing unions keep their provenance through the
  descriptor-read conversion, so qualifying writes are still flagged
  instead of escaping the rule.

Also rebased onto current main and merged the ReadWrite provenance flag
with the upstream IsMethod flag.
@nitishagar
nitishagar force-pushed the class-instance-var-assign-3750 branch from 38b0d45 to a454a79 Compare November 1, 2026 12:20
@github-actions github-actions Bot added size/xl and removed size/l labels Nov 1, 2026
@nitishagar

nitishagar commented Nov 1, 2026

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All four points addressed, and the branch is rebased onto current main (the rebase also ported the detection to the new resolve_class_attr_setter/AttrSetter setter architecture and merged the provenance flag with the upstream IsMethod flag on ClassAttribute::ReadWrite) — a454a79.

  • Narrowing no longer changes when the diagnostic is off. The diagnostic is now purely additive: it only emits an error and never touches the returned setter, so narrowing and type checking are byte-for-byte what they were before this feature existed whenever the kind is disabled or suppressed. (Under the new setter architecture the old should_narrow = false hook doesn't even exist — the emit is the only effect.)
  • Metaclass-instance writes are no longer rejected. The provenance flag is now recorded only on the class-attribute lookup path (as_class_attribute_inner). Writes that resolve through the metaclass fallback go through the instance path, where the flag is never set, so C.__name__ = "Renamed" and custom metaclass fields are treated as what they are — writes on an instance of the metaclass.
  • Classmethod-created attributes are no longer misclassified. Fields whose initialization is ClassMethod (set via cls in a method) are excluded from the provenance flag, so cls.x: int = 0 creates a class attribute, not a class-body instance variable.
  • Descriptor-containing unions no longer bypass the rule. DescriptorRead now carries the provenance flag and into_declared preserves it, so a class-body instance variable whose annotation contains descriptors is still flagged when written via the class.

Each fix has a regression test (test_instance_var_assign_metaclass_writes_not_flagged, test_instance_var_assign_classmethod_created_attr_not_flagged, test_instance_var_assign_descriptor_union_flagged). Full suite: 9895 passed; the only 2 failures are the missing_source LSP interaction tests, which fail identically on unmodified main in this environment (a system whatthepatch-stubs package resolves the import, so the expected missing-import diagnostic never appears).

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github-actions Bot commented Nov 1, 2026

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Diff from mypy_primer, showing the effect of this PR on open source code:

============================================================
SUMMARY
============================================================
Total: +562 new errors, -4 fixed errors
By preset: +0/-0 (default), +0/-0 (strict)

Projects with changes (66):
  pip: +4 -0
  tornado: +11 -0
  psycopg: +7 -0
  mongo-python-driver: +3 -0
  yarl: +1 -0
  cki-lib: +8 -0
  mkdocs: +2 -0
  rotki: +36 -0
  graphql-core: +15 -0
  pytest: +6 -0
  PyGithub: +5 -0
  flake8: +2 -0
  archinstall: +3 -0
  jax: +10 -0
  schema_salad: +4 -0
  scipy: +3 -0
  urllib3: +5 -0
  scikit-learn: +6 -0
  spark: +26 -0
  prefect: +32 -0
  alerta: +1 -0
  freqtrade: +40 -0
  colour: +5 -0
  pwndbg: +2 -0
  manticore: +1 -0
  schemathesis: +1 -0
  comtypes: +3 -0
  materialize: +8 -0
  mitmproxy: +4 -0
  streamlit: +14 -0
  pytest-autoprofile: +1 -0
  cloud-init: +2 -0
  vision: +2 -0
  strawberry: +15 -0
  zulip: +4 -0
  pandera: +19 -0
  steam.py: +6 -0
  hydra-zen: +1 -0
  ibis: +2 -0
  bokeh: +6 -0
  beartype: +16 -0
  bandersnatch: +10 -0
  ignite: +1 -0
  static-frame: +25 -0
  antidote: +1 -0
  aiohttp: +2 -0
  pyodide: +5 -0
  rclip: +2 -0
  hydpy: +23 -0
  pandas: +5 -0
  trio: +17 -0
  paasta: +4 -0
  pytensor: +12 -4
  meson: +14 -0
  sphinx: +1 -0
  werkzeug: +4 -0
  dd-trace-py: +52 -0
  core: +6 -0
  jinja: +2 -0
  spack: +4 -0
  poetry: +1 -0
  numpy-stl: +1 -0
  django-test-migrations: +2 -0
  scrapy: +8 -0
  porcupine: +2 -0
  discord.py: +16 -0
============================================================

FULL DIFF DETAILS
------------------------------------------------------------

pip (https://github.com/pypa/pip)
+ ERROR src/pip/_vendor/urllib3/contrib/emscripten/__init__.py:13:5-37: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/pip/_vendor/urllib3/contrib/emscripten/__init__.py:14:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/pip/_vendor/urllib3/http2/__init__.py:35:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/pip/_vendor/urllib3/http2/__init__.py:49:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]

tornado (https://github.com/tornadoweb/tornado)
+ ERROR tornado/netutil.py:552:13-28: Cannot set instance variable `_threadpool` from the class [instance-var-assign]
+ ERROR tornado/netutil.py:554:13-28: Cannot set instance variable `_threadpool` from the class [instance-var-assign]
+ ERROR tornado/netutil.py:555:13-32: Cannot set instance variable `_threadpool_pid` from the class [instance-var-assign]
+ ERROR tornado/test/locale_test.py:20:9-37: Cannot set instance variable `_cache` from the class [instance-var-assign]
+ ERROR tornado/test/netutil_test.py:124:13-41: Cannot set instance variable `_threadpool` from the class [instance-var-assign]
+ ERROR tornado/util.py:403:9-26: Cannot set instance variable `__impl_class` from the class [instance-var-assign]
+ ERROR tornado/util.py:404:9-27: Cannot set instance variable `__impl_kwargs` from the class [instance-var-assign]
+ ERROR tornado/util.py:414:13-30: Cannot set instance variable `__impl_class` from the class [instance-var-assign]
+ ERROR tornado/util.py:433:9-26: Cannot set instance variable `__impl_class` from the class [instance-var-assign]
+ ERROR tornado/util.py:434:9-27: Cannot set instance variable `__impl_kwargs` from the class [instance-var-assign]
+ ERROR tornado/web.py:3007:13-31: Cannot set instance variable `_static_hashes` from the class [instance-var-assign]

psycopg (https://github.com/psycopg/psycopg)
+ ERROR psycopg/psycopg/_connection_base.py:73:1-18: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/_tpc.py:114:1-15: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/types/json.py:50:9-27: Cannot set instance variable `_dumps` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/types/json.py:86:9-27: Cannot set instance variable `_loads` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/types/numeric.py:390:17-48: Cannot set instance variable `int_classes` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/types/numeric.py:392:17-48: Cannot set instance variable `int_classes` from the class [instance-var-assign]
+ ERROR psycopg/psycopg/types/string.py:179:13-37: Cannot set instance variable `_escaping` from the class [instance-var-assign]

mongo-python-driver (https://github.com/mongodb/mongo-python-driver)
+ ERROR pymongo/_kms_connect_shared.py:490:1-29: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR pymongo/_kms_connect_shared.py:491:1-31: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR pymongo/_kms_connect_shared.py:492:1-36: Cannot set instance variable `__module__` from the class [instance-var-assign]

yarl (https://github.com/aio-libs/yarl)
+ ERROR yarl/_url.py:204:1-16: Cannot set instance variable `__module__` from the class [instance-var-assign]

cki-lib (https://gitlab.com/cki-project/cki-lib)
+ ERROR cki_lib/inttests/cluster.py:113:9-23: Cannot set instance variable `api_client` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/cluster.py:114:9-27: Cannot set instance variable `dynamic_client` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/cluster.py:115:9-20: Cannot set instance variable `core_v1` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/cluster.py:143:13-25: Cannot set instance variable `hostname` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/cluster.py:167:13-25: Cannot set instance variable `hostname` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/remote_responses.py:170:13-26: Cannot set instance variable `responses` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/sqs.py:67:17-31: Cannot set instance variable `sqs_client` from the class [instance-var-assign]
+ ERROR cki_lib/inttests/sqs.py:68:17-34: Cannot set instance variable `sqs_queue_url` from the class [instance-var-assign]

mkdocs (https://github.com/mkdocs/mkdocs)
+ ERROR mkdocs/config/base.py:141:9-20: Cannot set instance variable `_schema` from the class [instance-var-assign]
+ ERROR mkdocs/plugins.py:83:13-30: Cannot set instance variable `config_scheme` from the class [instance-var-assign]

rotki (https://github.com/rotki/rotki)
+ ERROR rotkehlchen/assets/resolver.py:68:9-33: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR rotkehlchen/assets/resolver.py:69:9-32: Cannot set instance variable `_globaldb` from the class [instance-var-assign]
+ ERROR rotkehlchen/assets/resolver.py:70:9-39: Cannot set instance variable `_constant_assets` from the class [instance-var-assign]
+ ERROR rotkehlchen/db/settings.py:603:9-34: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR rotkehlchen/globaldb/handler.py:191:9-35: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:135:9-34: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:136:9-38: Cannot set instance variable `_cryptocompare` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:137:9-34: Cannot set instance variable `_coingecko` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:138:9-34: Cannot set instance variable `_defillama` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:139:9-32: Cannot set instance variable `_alchemy` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:140:9-32: Cannot set instance variable `_moralis` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:141:9-32: Cannot set instance variable `_birdeye` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:142:9-33: Cannot set instance variable `_coinbase` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:143:9-34: Cannot set instance variable `_uniswapv2` from the class [instance-var-assign]
+ ERROR rotkehlchen/history/price.py:144:9-34: Cannot set instance variable `_uniswapv3` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:472:9-28: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:475:9-32: Cannot set instance variable `_cryptocompare` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:476:9-28: Cannot set instance variable `_coingecko` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:477:9-28: Cannot set instance variable `_defillama` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:478:9-25: Cannot set instance variable `_kraken` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:479:9-26: Cannot set instance variable `_alchemy` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:480:9-26: Cannot set instance variable `_moralis` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:481:9-26: Cannot set instance variable `_birdeye` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:482:9-32: Cannot set instance variable `_manualcurrent` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:483:9-39: Cannot set instance variable `_cached_current_price` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:484:9-34: Cannot set instance variable `_inflight_prices` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:485:9-39: Cannot set instance variable `_inflight_prices_lock` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:486:9-38: Cannot set instance variable `_inflight_generation` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:487:9-31: Cannot set instance variable `_evm_managers` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:488:9-33: Cannot set instance variable `_msg_aggregator` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:489:9-32: Cannot set instance variable `special_tokens` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:524:13-39: Cannot set instance variable `eur_pegged_assets` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:526:13-25: Cannot set instance variable `usd` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:527:13-26: Cannot set instance variable `weth` from the class [instance-var-assign]
+ ERROR rotkehlchen/inquirer.py:1911:13-42: Cannot set instance variable `_inflight_generation` from the class [instance-var-assign]
+ ERROR rotkehlchen/tests/api/test_history.py:504:5-30: Cannot set instance variable `__instance` from the class [instance-var-assign]

graphql-core (https://github.com/graphql-python/graphql-core)
+ ERROR tests/execution/test_subscribe.py:1291:17-27: Cannot set instance variable `closed` from the class [instance-var-assign]
+ ERROR tests/pyutils/test_description.py:89:13-30: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR tests/pyutils/test_description.py:95:13-30: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR tests/type/test_schema.py:365:13-45: Cannot set instance variable `reserved_types` from the class [instance-var-assign]
+ ERROR tests/type/test_schema.py:371:17-49: Cannot set instance variable `reserved_types` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:38:13-22: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:40:13-22: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:43:17-26: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:45:13-22: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:55:17-26: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:57:17-26: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:59:17-26: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/description.py:61:13-22: Cannot set instance variable `bases` from the class [instance-var-assign]
+ ERROR src/graphql/pyutils/undefined.py:25:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/graphql/utilities/get_introspection_query.py:427:1-27: Cannot set instance variable `__doc__` from the class [instance-var-assign]

pytest (https://github.com/pytest-dev/pytest)
+ ERROR src/_pytest/debugging.py:77:5-29: Cannot set instance variable `_pluginmanager` from the class [instance-var-assign]
+ ERROR src/_pytest/debugging.py:78:5-22: Cannot set instance variable `_config` from the class [instance-var-assign]
+ ERROR src/_pytest/debugging.py:85:13-37: Cannot set instance variable `_pluginmanager` from the class [instance-var-assign]
+ ERROR src/_pytest/debugging.py:86:13-30: Cannot set instance variable `_config` from the class [instance-var-assign]
+ ERROR src/_pytest/debugging.py:144:9-29: Cannot set instance variable `_wrapped_pdb_cls` from the class [instance-var-assign]
+ ERROR src/_pytest/mark/structures.py:270:1-24: Cannot set instance variable `__module__` from the class [instance-var-assign]

PyGithub (https://github.com/PyGithub/PyGithub)
+ ERROR github/Requester.py:318:9-21: Cannot set instance variable `__logger` from the class [instance-var-assign]
+ ERROR github/Requester.py:322:9-21: Cannot set instance variable `__logger` from the class [instance-var-assign]
+ ERROR github/Requester.py:332:9-24: Cannot set instance variable `ON_CHECK_ME` from the class [instance-var-assign]
+ ERROR tests/Framework.py:182:9-23: Cannot set instance variable `__openFile` from the class [instance-var-assign]
+ ERROR tests/Framework.py:194:13-27: Cannot set instance variable `__requests` from the class [instance-var-assign]

flake8 (https://github.com/pycqa/flake8)
+ ERROR src/flake8/utils.py:110:9-24: Cannot set instance variable `filenames` from the class [instance-var-assign]
+ ERROR src/flake8/utils.py:111:9-20: Cannot set instance variable `codes` from the class [instance-var-assign]

archinstall (https://github.com/archlinux/archinstall)
+ ERROR archinstall/lib/disk/fido.py:28:4-19: Cannot set instance variable `_loaded_u2f` from the class [instance-var-assign]
+ ERROR archinstall/lib/disk/fido.py:97:4-26: Cannot set instance variable `_loaded_cryptsetup` from the class [instance-var-assign]
+ ERROR archinstall/tui/components.py:1344:3-11: Cannot set instance variable `app` from the class [instance-var-assign]

jax (https://github.com/google/jax)
+ ERROR jax/_src/basearray.py:187:1-17: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/_src/named_sharding.py:267:1-25: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/_src/pallas/fuser/fusible_dtype.py:127:5-21: Cannot set instance variable `_op_registry` from the class [instance-var-assign]
+ ERROR jax/_src/partition_spec.py:260:1-13: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/_src/profiler.py:357:5-47: Cannot set instance variable `allow_reuse_address` from the class [instance-var-assign]
+ ERROR jax/_src/sharding_impls.py:185:1-32: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/_src/test_util.py:1151:5-31: Cannot set instance variable `_default_global_config` from the class [instance-var-assign]
+ ERROR jax/_src/traceback_util.py:136:1-31: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/errors.py:37:1-27: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR jax/experimental/colocated_python/obj.py:207:3-23: Cannot set instance variable `__doc__` from the class [instance-var-assign]

schema_salad (https://github.com/common-workflow-language/schema_salad)
+ ERROR src/schema_salad/tests/test_real_cwl.py:31:13-32: Cannot set instance variable `document_loader` from the class [instance-var-assign]
+ ERROR src/schema_salad/tests/test_real_cwl.py:32:13-27: Cannot set instance variable `avsc_names` from the class [instance-var-assign]
+ ERROR src/schema_salad/tests/test_schemas_directive.py:31:13-32: Cannot set instance variable `document_loader` from the class [instance-var-assign]
+ ERROR src/schema_salad/tests/test_schemas_directive.py:32:13-27: Cannot set instance variable `avsc_names` from the class [instance-var-assign]

scipy (https://github.com/scipy/scipy)
+ ERROR scipy/optimize/_linprog_util.py:18:1-19: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR scipy/sparse/_base.py:1755:1-16: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR scipy/stats/_common.py:5:1-28: Cannot set instance variable `__doc__` from the class [instance-var-assign]

urllib3 (https://github.com/urllib3/urllib3)
+ ERROR test/conftest.py:402:13-45: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/urllib3/contrib/emscripten/__init__.py:13:5-37: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/urllib3/contrib/emscripten/__init__.py:14:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/urllib3/http2/__init__.py:35:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]
+ ERROR src/urllib3/http2/__init__.py:49:5-38: Cannot set instance variable `ConnectionCls` from the class [instance-var-assign]

scikit-learn (https://github.com/scikit-learn/scikit-learn)
+ ERROR sklearn/tests/test_base.py:580:9-33: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR sklearn/tests/test_base.py:587:9-33: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR sklearn/tests/test_base.py:624:9-35: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR sklearn/tests/test_base.py:634:9-35: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR sklearn/utils/_repr_html/tests/test_estimator.py:506:5-22: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR sklearn/utils/_repr_html/tests/test_estimator.py:537:5-22: Cannot set instance variable `__module__` from the class [instance-var-assign]

spark (https://github.com/apache/spark)
+ ERROR python/pyspark/pandas/typedef/typehints.py:894:13-27: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:897:21-34: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:900:21-34: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:904:17-30: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:916:21-33: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:918:21-33: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/pandas/typedef/typehints.py:920:17-29: Cannot set instance variable `tpe` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/catalog.py:410:1-16: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/client/reattach.py:147:17-50: Cannot set instance variable `_release_thread_pool_instance` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/conf.py:132:1-20: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/expressions.py:1056:13-57: Cannot set instance variable `_nextVarNameId` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/group.py:533:1-20: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/group.py:605:1-27: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/merge.py:157:5-24: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/merge.py:185:5-27: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/merge.py:222:5-35: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/merge.py:225:1-24: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/observation.py:91:1-20: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/plan.py:102:13-36: Cannot set instance variable `_nextPlanId` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/readwriter.py:586:1-24: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/session.py:1452:1-21: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/connect/streaming/readwriter.py:473:1-25: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/geo_utils.py:43:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR python/pyspark/sql/tests/test_inprocess_udf.py:160:9-29: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR python/pyspark/testing/goldenutils.py:120:9-21: Cannot set instance variable `_tz_prev` from the class [instance-var-assign]
+ ERROR python/pyspark/testing/tests/test_changed_files.py:111:9-26: Cannot set instance variable `__module__` from the class [instance-var-assign]

prefect (https://github.com/PrefectHQ/prefect)
+ ERROR src/integrations/prefect-dbt/tests/core/test_orchestrator_per_node.py:606:17-608:39: Cannot set instance variable `configured_factories` from the class [instance-var-assign]
+ ERROR src/prefect/_internal/analytics/service.py:60:21-34: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/_internal/analytics/service.py:75:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/_internal/waiters.py:164:9-33: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/_internal/waiters.py:242:17-30: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1542:13-31: Cannot set instance variable `_block_type_id` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1575:13-31: Cannot set instance variable `_block_type_id` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1592:9-29: Cannot set instance variable `_block_schema_id` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1639:17-35: Cannot set instance variable `_block_type_id` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1672:17-35: Cannot set instance variable `_block_type_id` from the class [instance-var-assign]
+ ERROR src/prefect/blocks/core.py:1689:13-33: Cannot set instance variable `_block_schema_id` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:230:9-35: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:239:9-17: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:240:9-16: Cannot set instance variable `all` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:619:9-46: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:626:9-17: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/events/clients.py:627:9-16: Cannot set instance variable `all` from the class [instance-var-assign]
+ ERROR src/prefect/events/worker.py:148:13-33: Cannot set instance variable `_client_override` from the class [instance-var-assign]
+ ERROR src/prefect/events/worker.py:151:9-29: Cannot set instance variable `_client_override` from the class [instance-var-assign]
+ ERROR src/prefect/server/concurrency/lease_storage/memory.py:26:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/server/concurrency/lease_storage/memory.py:35:9-36: Cannot set instance variable `_initialized` from the class [instance-var-assign]
+ ERROR src/prefect/server/events/actions.py:501:13-36: Cannot set instance variable `_registered_filters` from the class [instance-var-assign]
+ ERROR src/prefect/server/events/clients.py:74:9-35: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/server/events/clients.py:82:9-17: Cannot set instance variable `last` from the class [instance-var-assign]
+ ERROR src/prefect/server/events/clients.py:83:9-16: Cannot set instance variable `all` from the class [instance-var-assign]
+ ERROR src/prefect/server/utilities/messaging/memory.py:219:9-20: Cannot set instance variable `_topics` from the class [instance-var-assign]
+ ERROR src/prefect/server/worker_communication/cleanup_queue/memory.py:70:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/task_runs.py:172:9-33: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/task_runs.py:257:17-30: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR src/prefect/types/_datetime_deprecations.py:102:9-23: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/prefect/utilities/visualization.py:130:9-36: Cannot set instance variable `current` from the class [instance-var-assign]
+ ERROR src/prefect/utilities/visualization.py:134:9-36: Cannot set instance variable `current` from the class [instance-var-assign]

alerta (https://github.com/alerta/alerta)
+ ERROR alerta/utils/client.py:23:13-38: Cannot set instance variable `debuglevel` from the class [instance-var-assign]

freqtrade (https://github.com/freqtrade/freqtrade)
+ ERROR freqtrade/freqtradebot.py:127:13-32: Cannot set instance variable `timeframe` from the class [instance-var-assign]
+ ERROR freqtrade/optimize/hyperopt/hyperopt_interface.py:40:9-28: Cannot set instance variable `timeframe` from the class [instance-var-assign]
+ ERROR freqtrade/optimize/hyperopt/hyperopt_interface.py:216:9-28: Cannot set instance variable `timeframe` from the class [instance-var-assign]
+ ERROR freqtrade/optimize/hyperopt_tools.py:42:9-18: Cannot set instance variable `state` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/custom_data.py:112:13-42: Cannot set instance variable `custom_data` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/custom_data.py:123:13-42: Cannot set instance variable `custom_data` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/pairlock_middleware.py:32:13-28: Cannot set instance variable `locks` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:796:9-29: Cannot set instance variable `bt_trades` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:797:9-34: Cannot set instance variable `bt_trades_open` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:798:9-37: Cannot set instance variable `bt_trades_open_pp` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:799:9-44: Cannot set instance variable `bt_open_open_trade_count` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:800:9-35: Cannot set instance variable `bt_total_profit` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:1555:9-44: Cannot set instance variable `bt_open_open_trade_count` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:1557:9-35: Cannot set instance variable `bt_total_profit` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:1564:13-48: Cannot set instance variable `bt_open_open_trade_count` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/trade_model.py:1572:9-44: Cannot set instance variable `bt_open_open_trade_count` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/usedb_context.py:12:5-24: Cannot set instance variable `timeframe` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/usedb_context.py:13:5-17: Cannot set instance variable `use_db` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/usedb_context.py:22:5-24: Cannot set instance variable `timeframe` from the class [instance-var-assign]
+ ERROR freqtrade/persistence/usedb_context.py:23:5-17: Cannot set instance variable `use_db` from the class [instance-var-assign]
+ ERROR freqtrade/plot/plotting.py:643:5-17: Cannot set instance variable `dp` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_analysis.py:90:9-31: Cannot set instance variable `analysis_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_analysis.py:140:5-27: Cannot set instance variable `analysis_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_analysis.py:225:5-27: Cannot set instance variable `analysis_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_backtest.py:167:9-31: Cannot set instance variable `analysis_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_backtest.py:211:5-27: Cannot set instance variable `analysis_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_download_data.py:48:9-36: Cannot set instance variable `download_data_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_download_data.py:84:5-32: Cannot set instance variable `download_data_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_pairlists.py:70:9-31: Cannot set instance variable `pairlist_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/api_pairlists.py:99:5-27: Cannot set instance variable `pairlist_running` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:110:9-34: Cannot set instance variable `_message_stream` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:114:9-34: Cannot set instance variable `_message_stream` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:140:9-26: Cannot set instance variable `_config` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:166:13-27: Cannot set instance variable `_rpc` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:167:13-31: Cannot set instance variable `_has_rpc` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:174:9-27: Cannot set instance variable `_has_rpc` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:176:9-24: Cannot set instance variable `exchanges` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:177:9-19: Cannot set instance variable `jobs` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:188:9-21: Cannot set instance variable `_has_rpc` from the class [instance-var-assign]
+ ERROR freqtrade/rpc/api_server/webserver.py:189:9-17: Cannot set instance variable `_rpc` from the class [instance-var-assign]

colour (https://github.com/colour-science/colour)
+ ERROR colour/utilities/network.py:175:9-30: Cannot set instance variable `_INSTANCE_ID` from the class [instance-var-assign]
+ ERROR colour/utilities/network.py:2552:13-57: Cannot set instance variable `ThreadPoolExecutor` from the class [instance-var-assign]
+ ERROR colour/utilities/network.py:2568:13-57: Cannot set instance variable `ThreadPoolExecutor` from the class [instance-var-assign]
+ ERROR colour/utilities/network.py:2737:13-59: Cannot set instance variable `ProcessPoolExecutor` from the class [instance-var-assign]
+ ERROR colour/utilities/network.py:2755:13-59: Cannot set instance variable `ProcessPoolExecutor` from the class [instance-var-assign]

pwndbg (https://github.com/pwndbg/pwndbg)
+ ERROR pwndbg/gdblib/tui/context.py:167:17-49: Cannot set instance variable `_static_enabled` from the class [instance-var-assign]
+ ERROR pwndbg/gdblib/tui/context.py:170:13-45: Cannot set instance variable `_static_enabled` from the class [instance-var-assign]

manticore (https://github.com/trailofbits/manticore)
+ ERROR manticore/binary/binary.py:144:1-14: Cannot set instance variable `magics` from the class [instance-var-assign]

schemathesis (https://github.com/schemathesis/schemathesis)
+ ERROR src/schemathesis/core/deserialization.py:127:5-32: Cannot set instance variable `yaml_implicit_resolvers` from the class [instance-var-assign]

comtypes (https://github.com/enthought/comtypes)
+ ERROR comtypes/_comobject.py:279:13-33: Cannot set instance variable `__server__` from the class [instance-var-assign]
+ ERROR comtypes/_comobject.py:291:18-38: Cannot set instance variable `__server__` from the class [instance-var-assign]
+ ERROR comtypes/_comobject.py:293:9-29: Cannot set instance variable `__server__` from the class [instance-var-assign]

materialize (https://github.com/MaterializeInc/materialize)
+ ERROR test/limits/mzcompose.py:131:9-20: Cannot set instance variable `EXPLAIN` from the class [instance-var-assign]
+ ERROR test/limits/mzcompose.py:2376:21-35: Cannot set instance variable `COUNT` from the class [instance-var-assign]
+ ERROR test/limits/mzcompose.py:2418:21-35: Cannot set instance variable `COUNT` from the class [instance-var-assign]
+ ERROR test/limits/mzcompose.py:2420:21-35: Cannot set instance variable `COUNT` from the class [instance-var-assign]
+ ERROR test/limits/mzcompose.py:2422:21-35: Cannot set instance variable `COUNT` from the class [instance-var-assign]
+ ERROR misc/python/materialize/ui.py:36:9-18: Cannot set instance variable `quiet` from the class [instance-var-assign]
+ ERROR misc/python/materialize/ui.py:38:13-22: Cannot set instance variable `quiet` from the class [instance-var-assign]
+ ERROR misc/python/materialize/zippy/framework.py:144:9-29: Cannot set instance variable `current_seqno` from the class [instance-var-assign]

mitmproxy (https://github.com/mitmproxy/mitmproxy)
+ ERROR docs/src/examples/contrib/upstream_pac.py:47:17-37: Cannot set instance variable `pac_file` from the class [instance-var-assign]
+ ERROR docs/src/examples/contrib/upstream_pac.py:50:17-37: Cannot set instance variable `pac_file` from the class [instance-var-assign]
+ ERROR examples/contrib/upstream_pac.py:47:17-37: Cannot set instance variable `pac_file` from the class [instance-var-assign]
+ ERROR examples/contrib/upstream_pac.py:50:17-37: Cannot set instance variable `pac_file` from the class [instance-var-assign]

streamlit (https://github.com/streamlit/streamlit)
+ ERROR lib/streamlit/delta_generator_singletons.py:93:9-42: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR lib/streamlit/runtime/credentials.py:137:9-31: Cannot set instance variable `_singleton` from the class [instance-var-assign]
+ ERROR lib/streamlit/runtime/forward_msg_queue.py:45:9-44: Cannot set instance variable `_before_enqueue_msg` from the class [instance-var-assign]
+ ERROR lib/streamlit/runtime/metrics_util.py:371:21-34: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR lib/streamlit/runtime/pages_manager.py:61:13-46: Cannot set instance variable `uses_pages_directory` from the class [instance-var-assign]
+ ERROR lib/streamlit/runtime/runtime.py:206:9-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR lib/streamlit/watcher/event_based_path_watcher.py:193:9-37: Cannot set instance variable `_singleton` from the class [instance-var-assign]
+ ERROR lib/tests/delta_generator_test_case.py:84:13-59: Cannot set instance variable `_bidi_component_manager` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/dataframe_util_test.py:1308:5-37: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/dataframe_util_test.py:1355:5-32: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/runtime/caching/gh14593_pickle_sys_modules_test.py:34:5-21: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/runtime/caching/gh14593_pickle_sys_modules_test.py:46:5-21: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/runtime/caching/gh14593_pickle_sys_modules_test.py:66:5-21: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR lib/tests/streamlit/watcher/local_sources_watcher_test.py:747:9-25: Cannot set instance variable `__module__` from the class [instance-var-assign]

pytest-autoprofile (https://gitlab.com/TTsangSC/pytest-autoprofile)
+ ERROR src/pytest_autoprofile/profiler.py:429:1-27: Cannot set instance variable `__doc__` from the class [instance-var-assign]

cloud-init (https://github.com/canonical/cloud-init)
+ ERROR cloudinit/log/loggers.py:300:5-32: Cannot set instance variable `converter` from the class [instance-var-assign]
+ ERROR tests/unittests/test_log.py:30:5-32: Cannot set instance variable `converter` from the class [instance-var-assign]

vision (https://github.com/pytorch/vision)
+ ERROR torchvision/models/googlenet.py:22:1-33: Cannot set instance variable `__annotations__` from the class [instance-var-assign]
+ ERROR torchvision/models/inception.py:21:1-33: Cannot set instance variable `__annotations__` from the class [instance-var-assign]

strawberry (https://github.com/strawberry-graphql/strawberry)
+ ERROR strawberry/ext/mypy_plugin.py:268:9-28: Cannot set instance variable `VERSION` from the class [instance-var-assign]
+ ERROR strawberry/ext/mypy_plugin.py:270:9-28: Cannot set instance variable `VERSION` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:429:5-34: Cannot set instance variable `keep_alive` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:430:5-43: Cannot set instance variable `keep_alive_interval` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:431:5-33: Cannot set instance variable `protocols` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:432:5-52: Cannot set instance variable `connection_init_wait_timeout` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:433:5-47: Cannot set instance variable `graphiql_allowed_accept` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:434:5-30: Cannot set instance variable `schema` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:435:5-45: Cannot set instance variable `allow_queries_via_get` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:436:5-35: Cannot set instance variable `graphql_ide` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:437:5-49: Cannot set instance variable `multipart_uploads_enabled` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:438:5-56: Cannot set instance variable `max_subscriptions_per_connection` from the class [instance-var-assign]
+ ERROR strawberry/litestar/controller.py:441:5-39: Cannot set instance variable `allowed_origins` from the class [instance-var-assign]
+ ERROR strawberry/permission.py:88:9-33: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR strawberry/types/unset.py:10:13-27: Cannot set instance variable `__instance` from the class [instance-var-assign]

zulip (https://github.com/zulip/zulip)
+ ERROR zerver/lib/rate_limiter.py:231:13-24: Cannot set instance variable `_script` from the class [instance-var-assign]
+ ERROR zerver/management/commands/send_test_email.py:49:13-36: Cannot set instance variable `debuglevel` from the class [instance-var-assign]
+ ERROR zerver/tests/test_redis_utils.py:25:9-25: Cannot set instance variable `redis_client` from the class [instance-var-assign]
+ ERROR zerver/worker/base.py:60:9-25: Cannot set instance variable `queue_name` from the class [instance-var-assign]

pandera (https://github.com/pandera-dev/pandera)
+ ERROR pandera/api/dataframe/model.py:320:13-28: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR pandera/api/dataframe/model.py:326:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/api/dataframe/model.py:347:9-23: Cannot set instance variable `__config__` from the class [instance-var-assign]
+ ERROR pandera/api/dataframe/model.py:347:25-39: Cannot set instance variable `__extras__` from the class [instance-var-assign]
+ ERROR pandera/api/pyspark/model.py:167:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/api/pyspark/model.py:177:9-23: Cannot set instance variable `__config__` from the class [instance-var-assign]
+ ERROR pandera/api/pyspark/model.py:177:25-39: Cannot set instance variable `__extras__` from the class [instance-var-assign]
+ ERROR pandera/api/tensordict/model.py:228:17-32: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR pandera/api/tensordict/model.py:230:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/api/tensordict/model.py:247:9-23: Cannot set instance variable `__config__` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:467:17-32: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:469:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:570:17-32: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:572:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:684:17-32: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR pandera/api/xarray/model.py:686:13-23: Cannot set instance variable `Config` from the class [instance-var-assign]
+ ERROR pandera/strategies/constraints.py:36:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR tests/core/test_register_checks.py:75:5-38: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR tests/pandas/test_model.py:1959:5-20: Cannot set instance variable `name` from the class [instance-var-assign]

steam.py (https://github.com/Gobot1234/steam.py)
+ ERROR steam/_gc/state.py:87:9-23: Cannot set instance variable `gc_parsers` from the class [instance-var-assign]
+ ERROR steam/ext/commands/converters.py:239:13-30: Cannot set instance variable `converter_for` from the class [instance-var-assign]
+ ERROR steam/game_server.py:94:5-24: Cannot set instance variable `__annotations__` from the class [instance-var-assign]
+ ERROR steam/game_server.py:96:1-33: Cannot set instance variable `__annotations__` from the class [instance-var-assign]
+ ERROR steam/protobufs/msg.py:52:5-24: Cannot set instance variable `__annotations__` from the class [instance-var-assign]
+ ERROR steam/state.py:3038:1-24: Cannot set instance variable `parsers` from the class [instance-var-assign]

hydra-zen (https://github.com/mit-ll-responsible-ai/hydra-zen)
+ ERROR src/hydra_zen/structured_configs/_implementations.py:531:13-24: Cannot set instance variable `__doc__` from the class [instance-var-assign]

ibis (https://github.com/ibis-project/ibis)
+ ERROR ibis/expr/datashape.py:60:1-17: Cannot set instance variable `SCALAR` from the class [instance-var-assign]
+ ERROR ibis/expr/datashape.py:61:1-19: Cannot set instance variable `COLUMNAR` from the class [instance-var-assign]

bokeh (https://github.com/bokeh/bokeh)
+ ERROR src/bokeh/core/has_props.py:106:5-16: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR src/bokeh/core/has_props.py:356:9-27: Cannot set instance variable `__properties__` from the class [instance-var-assign]
+ ERROR src/bokeh/core/has_props.py:357:9-36: Cannot set instance variable `__overridden_defaults__` from the class [instance-var-assign]
+ ERROR src/bokeh/models/formatters.py:1105:1-30: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR src/bokeh/models/formatters.py:1110:1-31: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR src/bokeh/server/tornado.py:919:1-21: Cannot set instance variable `__doc__` from the class [instance-var-assign]

beartype (https://github.com/beartype/beartype)
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:248:5-32: Cannot set instance variable `__args_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:249:5-34: Cannot set instance variable `__kwargs_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:497:5-43: Cannot set instance variable `__hint_pep749_ref_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:749:5-37: Cannot set instance variable `__call_curr_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:750:5-44: Cannot set instance variable `__exception_prefix_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:753:5-32: Cannot set instance variable `__conf_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:754:5-61: Cannot set instance variable `__func_local_parent_codeobj_weakref_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:756:5-37: Cannot set instance variable `__hint_name_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:757:5-44: Cannot set instance variable `__hint_parent_sane_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefproxy.py:758:5-38: Cannot set instance variable `__scope_name_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefset.py:103:9-41: Cannot set instance variable `__call_curr_beartype__` from the class [instance-var-assign]
+ ERROR beartype/_check/forward/reference/fwdrefset.py:104:9-48: Cannot set instance variable `__exception_prefix_beartype__` from the class [instance-var-assign]
+ ERROR beartype/door/_cls/_doormap.py:232:9-32: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR beartype/roar/_roarexc.py:112:9-34: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR beartype/roar/_roarwarn.py:56:9-34: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR beartype/typing/_typingpep544.py:616:1-20: Cannot set instance variable `__module__` from the class [instance-var-assign]

bandersnatch (https://github.com/pypa/bandersnatch)
+ ERROR src/bandersnatch/tests/plugins/test_filename.py:15:5-50: Cannot set instance variable `_patterns` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/plugins/test_filename.py:16:5-54: Cannot set instance variable `_packagetypes` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/plugins/test_metadata_plugins.py:291:9-21: Cannot set instance variable `patterns` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/plugins/test_metadata_plugins.py:295:9-21: Cannot set instance variable `patterns` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/plugins/test_metadata_plugins.py:569:9-48: Cannot set instance variable `patterns` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/test_configuration.py:30:5-25: Cannot set instance variable `_instances` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/test_configuration.py:34:5-25: Cannot set instance variable `_instances` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/test_main.py:31:5-25: Cannot set instance variable `_instances` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/test_mirror.py:154:5-25: Cannot set instance variable `_instances` from the class [instance-var-assign]
+ ERROR src/bandersnatch/tests/test_mirror.py:178:5-25: Cannot set instance variable `_instances` from the class [instance-var-assign]

ignite (https://github.com/pytorch/ignite)
+ ERROR ignite/distributed/utils.py:554:5-37: Cannot set instance variable `_ext_local_rank` from the class [instance-var-assign]

static-frame (https://github.com/static-frame/static-frame)
+ ERROR static_frame/core/container_util.py:142:9-17: Cannot set instance variable `_map` from the class [instance-var-assign]
+ ERROR static_frame/core/index.py:1932:1-27: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index.py:1933:1-29: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:366:1-31: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:367:1-33: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:468:1-36: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:469:1-38: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:561:1-31: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:562:1-33: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:579:1-31: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:580:1-33: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:597:1-33: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:598:1-35: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:615:1-33: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:616:1-35: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:633:1-38: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:634:1-40: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:651:1-38: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:652:1-40: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:669:1-37: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_datetime.py:670:1-39: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_hierarchy.py:3356:1-36: Cannot set instance variable `_MUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/index_hierarchy.py:3357:1-38: Cannot set instance variable `_IMMUTABLE_CONSTRUCTOR` from the class [instance-var-assign]
+ ERROR static_frame/core/util.py:3812:13-22: Cannot set instance variable `_size` from the class [instance-var-assign]
+ ERROR static_frame/core/util.py:3813:13-23: Cannot set instance variable `_array` from the class [instance-var-assign]

antidote (https://github.com/Finistere/antidote)
+ ERROR tests/core/test_thread_safety.py:59:9-20: Cannot set instance variable `__state` from the class [instance-var-assign]

aiohttp (https://github.com/aio-libs/aiohttp)
+ ERROR aiohttp/helpers.py:867:9-22: Cannot set instance variable `__cause__` from the class [instance-var-assign]
+ ERROR aiohttp/resolver.py:207:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]

pyodide (https://github.com/pyodide/pyodide)
+ ERROR pyodide-build/pyodide_build/out_of_tree/pypi.py:360:5-28: Cannot set instance variable `BUILD_SKIP` from the class [instance-var-assign]
+ ERROR pyodide-build/pyodide_build/out_of_tree/pypi.py:439:5-31: Cannot set instance variable `BUILD_EXPORTS` from the class [instance-var-assign]
+ ERROR pyodide-build/pyodide_build/out_of_tree/pypi.py:440:5-29: Cannot set instance variable `BUILD_FLAGS` from the class [instance-var-assign]
+ ERROR pyodide-build/pyodide_build/out_of_tree/pypi.py:474:5-31: Cannot set instance variable `BUILD_EXPORTS` from the class [instance-var-assign]
+ ERROR pyodide-build/pyodide_build/out_of_tree/pypi.py:475:5-29: Cannot set instance variable `BUILD_FLAGS` from the class [instance-var-assign]

rclip (https://github.com/yurijmikhalevich/rclip)
+ ERROR rclip/model_download.py:268:3-35: Cannot set instance variable `shared_bar` from the class [instance-var-assign]
+ ERROR rclip/model_download.py:274:5-37: Cannot set instance variable `shared_bar` from the class [instance-var-assign]

hydpy (https://github.com/hydpy-dev/hydpy)
+ ERROR hydpy/core/filetools.py:1141:9-32: Cannot set instance variable `_workingpath` from the class [instance-var-assign]
+ ERROR hydpy/core/filetools.py:1148:13-36: Cannot set instance variable `_workingpath` from the class [instance-var-assign]
+ ERROR hydpy/core/masktools.py:32:9-17: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR hydpy/core/modeltools.py:117:9-24: Cannot set instance variable `REUSEMARKER` from the class [instance-var-assign]
+ ERROR hydpy/core/objecttools.py:1102:13-51: Cannot set instance variable `_always_bracketed` from the class [instance-var-assign]
+ ERROR hydpy/core/objecttools.py:1110:13-51: Cannot set instance variable `_always_bracketed` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:3587:17-30: Cannot set instance variable `constants` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:3928:17-31: Cannot set instance variable `refindices` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:3929:17-30: Cannot set instance variable `constants` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:3930:17-29: Cannot set instance variable `relevant` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:4963:17-31: Cannot set instance variable `entrynames` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:4964:17-29: Cannot set instance variable `entrymin` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:5405:17-29: Cannot set instance variable `rownames` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:5406:17-27: Cannot set instance variable `rowmin` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:5427:17-32: Cannot set instance variable `columnnames` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:5428:17-30: Cannot set instance variable `columnmin` from the class [instance-var-assign]
+ ERROR hydpy/core/parametertools.py:5446:9-31: Cannot set instance variable `_rowcolumnmappings` from the class [instance-var-assign]
+ ERROR hydpy/core/typingtools.py:58:1-13: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR hydpy/core/variabletools.py:582:9-17: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR hydpy/core/variabletools.py:1157:17-32: Cannot set instance variable `_refweights` from the class [instance-var-assign]
+ ERROR hydpy/core/variabletools.py:1160:17-32: Cannot set instance variable `_refweights` from the class [instance-var-assign]
+ ERROR hydpy/core/variabletools.py:1171:9-17: Cannot set instance variable `unit` from the class [instance-var-assign]
+ ERROR hydpy/exe/servertools.py:261:1-11: Cannot set instance variable `__doc__` from the class [instance-var-assign]

pandas (https://github.com/pandas-dev/pandas)
+ ERROR pandas/core/dtypes/dtypes.py:155:9-26: Cannot set instance variable `_cache_dtypes` from the class [instance-var-assign]
+ ERROR pandas/core/window/rolling.py:3574:1-16: Cannot set instance variable `__doc__` from the class [instance-var-assign]
+ ERROR pandas/io/parsers/python_parser.py:227:17-30: Cannot set instance variable `delimiter` from the class [instance-var-assign]
+ ERROR pandas/io/parsers/python_parser.py:254:17-30: Cannot set instance variable `delimiter` from the class [instance-var-assign]
+ ERROR pandas/tests/generic/test_frame.py:110:13-35: Cannot set instance variable `_metadata` from the class [instance-var-assign]

trio (https://github.com/python-trio/trio)
+ ERROR src/trio/_abc.py:705:1-23: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/_abc.py:706:1-26: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/_abc.py:707:1-20: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/_abc.py:722:1-19: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/_ssl.py:918:1-21: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:482:9-18: Cannot set instance variable `ran` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:483:9-25: Cannot set instance variable `high_water` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:484:9-22: Cannot set instance variable `running` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:485:9-21: Cannot set instance variable `parked` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:493:17-26: Cannot set instance variable `ran` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:494:17-30: Cannot set instance variable `running` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:495:17-33: Cannot set instance variable `high_water` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:498:17-29: Cannot set instance variable `parked` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:501:17-29: Cannot set instance variable `parked` from the class [instance-var-assign]
+ ERROR src/trio/_tests/test_threads.py:502:17-30: Cannot set instance variable `running` from the class [instance-var-assign]
+ ERROR src/trio/testing/_memory_streams.py:280:1-28: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/trio/testing/_memory_streams.py:283:1-31: Cannot set instance variable `__module__` from the class [instance-var-assign]

paasta (https://github.com/yelp/paasta)
+ ERROR paasta_tools/utils.py:4086:13-19: Cannot set instance variable `zk` from the class [instance-var-assign]
+ ERROR paasta_tools/utils.py:4090:9-20: Cannot set instance variable `counter` from the class [instance-var-assign]
+ ERROR paasta_tools/utils.py:4095:9-20: Cannot set instance variable `counter` from the class [instance-var-assign]
+ ERROR paasta_tools/utils.py:4099:13-19: Cannot set instance variable `zk` from the class [instance-var-assign]

pytensor (https://github.com/pymc-devs/pytensor)
+ ERROR pytensor/graph/features.py:333:9-31: Cannot set instance variable `_feature_callbacks` from the class [instance-var-assign]
+ ERROR pytensor/link/c/op.py:206:17-44: Cannot set instance variable `gxx_support_openmp` from the class [instance-var-assign]
+ ERROR pytensor/link/c/type.py:300:1-24: Cannot set instance variable `constant_type` from the class [instance-var-assign]
+ ERROR pytensor/scalar/basic.py:949:1-25: Cannot set instance variable `variable_type` from the class [instance-var-assign]
+ ERROR pytensor/scalar/basic.py:979:1-25: Cannot set instance variable `constant_type` from the class [instance-var-assign]
+ ERROR pytensor/sparse/variable.py:480:1-31: Cannot set instance variable `variable_type` from the class [instance-var-assign]
+ ERROR pytensor/sparse/variable.py:481:1-31: Cannot set instance variable `constant_type` from the class [instance-var-assign]
- ERROR pytensor/tensor/random/variable.py:82:62-88: Unused `# type: ignore` comment [unused-type-ignore]
+ ERROR pytensor/tensor/type_other.py:106:1-24: Cannot set instance variable `constant_type` from the class [instance-var-assign]
+ ERROR pytensor/tensor/variable.py:897:1-25: Cannot set instance variable `variable_type` from the class [instance-var-assign]
+ ERROR pytensor/tensor/variable.py:1092:1-25: Cannot set instance variable `constant_type` from the class [instance-var-assign]
+ ERROR pytensor/typed_list/basic.py:58:1-28: Cannot set instance variable `variable_type` from the class [instance-var-assign]
+ ERROR pytensor/typed_list/basic.py:74:1-28: Cannot set instance variable `constant_type` from the class [instance-var-assign]
- ERROR pytensor/xtensor/random/variable.py:82:64-90: Unused `# type: ignore` comment [unused-type-ignore]
- ERROR pytensor/xtensor/type.py:975:46-60: Unused `# type: ignore` comment [unused-type-ignore]
- ERROR pytensor/xtensor/type.py:976:46-60: Unused `# type: ignore` comment [unused-type-ignore]

meson (https://github.com/mesonbuild/meson)
+ ERROR mesonbuild/dependencies/cmake.py:171:17-56: Cannot set instance variable `class_working_generator` from the class [instance-var-assign]
+ ERROR mesonbuild/dependencies/cmake.py:387:17-56: Cannot set instance variable `class_working_generator` from the class [instance-var-assign]
+ ERROR mesonbuild/dependencies/dub.py:93:13-39: Cannot set instance variable `class_dubbin` from the class [instance-var-assign]
+ ERROR mesonbuild/interpreterbase/baseobjects.py:53:9-20: Cannot set instance variable `METHODS` from the class [instance-var-assign]
+ ERROR mesonbuild/interpreterbase/baseobjects.py:54:9-22: Cannot set instance variable `OPERATORS` from the class [instance-var-assign]
+ ERROR mesonbuild/interpreterbase/baseobjects.py:55:9-30: Cannot set instance variable `TRIVIAL_OPERATORS` from the class [instance-var-assign]
+ ERROR mesonbuild/modules/dlang.py:50:13-37: Cannot set instance variable `class_dubbin` from the class [instance-var-assign]
+ ERROR mesonbuild/modules/dlang.py:56:13-37: Cannot set instance variable `class_dubbin` from the class [instance-var-assign]
+ ERROR run_project_tests.py:577:5-36: Cannot set instance variable `class_cmakeinfo` from the class [instance-var-assign]
+ ERROR run_project_tests.py:578:5-34: Cannot set instance variable `class_impl` from the class [instance-var-assign]
+ ERROR run_project_tests.py:579:5-38: Cannot set instance variable `class_cli_impl` from the class [instance-var-assign]
+ ERROR run_project_tests.py:580:5-43: Cannot set instance variable `pkg_bin_per_machine` from the class [instance-var-assign]
+ ERROR unittests/baseplatformtests.py:125:13-26: Cannot set instance variable `_mktmpdir` from the class [instance-var-assign]
+ ERROR unittests/baseplatformtests.py:127:13-26: Cannot set instance variable `_mktmpdir` from the class [instance-var-assign]

sphinx (https://github.com/sphinx-doc/sphinx)
+ ERROR sphinx/transforms/post_transforms/images.py:222:13-37: Cannot set instance variable `available` from the class [instance-var-assign]

werkzeug (https://github.com/pallets/werkzeug)
+ ERROR tests/test_datastructures.py:30:17-31: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR tests/test_datastructures.py:32:17-31: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR src/werkzeug/exceptions.py:50:21-29: Cannot set instance variable `name` from the class [instance-var-assign]
+ ERROR src/werkzeug/serving.py:729:13-37: Cannot set instance variable `protocol_version` from the class [instance-var-assign]

dd-trace-py (https://github.com/DataDog/dd-trace-py)
+ ERROR ddtrace/aiguard/integrations/_anthropic_errors.py:75:1-38: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR ddtrace/aiguard/integrations/_openai_errors.py:75:1-35: Cannot set instance variable `__module__` from the class [instance-var-assign]
+ ERROR ddtrace/appsec/_api_security/api_manager.py:79:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/appsec/_api_security/api_manager.py:93:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/appsec/_asm_request_context.py:179:5-31: Cannot set instance variable `counter` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_debugger.py:236:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_debugger.py:280:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_exception/replay.py:423:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_exception/replay.py:438:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_origin/span.py:215:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_origin/span.py:218:22-34: Cannot set instance variable `_pending` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_origin/span.py:241:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_sampling.py:162:9-20: Cannot set instance variable `_tracer` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_sampling.py:165:9-21: Cannot set instance variable `_limiter` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_sampling.py:172:9-20: Cannot set instance variable `_tracer` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_sampling.py:172:23-35: Cannot set instance variable `_limiter` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_uploader.py:274:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/debugging/_uploader.py:286:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/errortracking/_handled_exceptions/collector.py:33:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/errortracking/_handled_exceptions/collector.py:47:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/ci_visibility/recorder.py:639:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/ci_visibility/recorder.py:680:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/ci_visibility/recorder.py:690:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/ci_visibility/recorder.py:708:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/core/subscriber.py:71:9-28: Cannot set instance variable `_event_handlers` from the class [instance-var-assign]
+ ERROR ddtrace/internal/core/subscriber.py:158:9-30: Cannot set instance variable `_started_handlers` from the class [instance-var-assign]
+ ERROR ddtrace/internal/core/subscriber.py:165:9-28: Cannot set instance variable `_ended_handlers` from the class [instance-var-assign]
+ ERROR ddtrace/internal/module.py:464:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/module.py:488:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/module.py:510:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/module.py:531:9-22: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/runtime/runtime_metrics.py:130:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/runtime/runtime_metrics.py:146:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/threads.py:234:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/internal/threads.py:245:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:972:9-31: Cannot set instance variable `_prompt_manager` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1095:9-21: Cannot set instance variable `_app_key` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1100:17-36: Cannot set instance variable `_prompt_manager` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1101:9-26: Cannot set instance variable `_project_name` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1102:9-32: Cannot set instance variable `_git_repository_url` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1102:34-53: Cannot set instance variable `_git_commit_sha` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:1159:13-26: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:2029:9-28: Cannot set instance variable `_prompt_manager` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:2203:17-36: Cannot set instance variable `_prompt_manager` from the class [instance-var-assign]
+ ERROR ddtrace/llmobs/_llmobs.py:3923:1-17: Cannot set instance variable `_instance` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/__init__.py:46:5-39: Cannot set instance variable `_import_error` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/profiler.py:78:13-38: Cannot set instance variable `_active_instance` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/profiler.py:100:21-46: Cannot set instance variable `_active_instance` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/profiler.py:118:9-38: Cannot set instance variable `_exit_signal_handler` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/profiler.py:157:17-42: Cannot set instance variable `_active_instance` from the class [instance-var-assign]
+ ERROR ddtrace/profiling/profiler.py:172:13-38: Cannot set instance variable `_active_instance` from the class [instance-var-assign]
+ ERROR ddtrace/testing/internal/telemetry.py:65:9-31: Cannot set instance variable `_instance` from the class [instance-var-assign]

core (https://github.com/home-assistant/core)
+ ERROR homeassistant/components/camera/img_util.py:91:13-42: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR homeassistant/components/camera/img_util.py:97:13-42: Cannot set instance variable `__instance` from the class [instance-var-assign]
+ ERROR homeassistant/components/recorder/core.py:1484:13-32: Cannot set instance variable `pool_lock` from the class [instance-var-assign]
+ ERROR homeassistant/components/rflink/entity.py:239:9-22: Cannot set instance variable `_protocol` from the class [instance-var-assign]
+ ERROR homeassistant/components/rflink/entity.py:241:13-26: Cannot set instance variable `_wait_ack` from the class [instance-var-assign]
+ ERROR homeassistant/helpers/entity.py:643:9-45: Cannot set instance variable `__combined_unrecorded_attributes` from the class [instance-var-assign]

jinja (https://github.com/pallets/jinja)
+ ERROR src/jinja2/environment.py:1666:1-27: Cannot set instance variable `template_class` from the class [instance-var-assign]
+ ERROR src/jinja2/nativetypes.py:130:1-33: Cannot set instance variable `template_class` from the class [instance-var-assign]

spack (https://github.com/spack/spack)
+ ERROR lib/spack/spack/directives.py:1053:9-24: Cannot set instance variable `maintainers` from the class [instance-var-assign]
+ ERROR lib/spack/spack/directives_meta.py:66:9-44: Cannot set instance variable `_patches_dependencies` from the class [instance-var-assign]
+ ERROR lib/spack/spack/directives_meta.py:282:17-52: Cannot set instance variable `_patches_dependencies` from the class [instance-var-assign]
+ ERROR lib/spack/spack/tengine.py:36:9-36: Cannot set instance variable `_new_context_properties` from the class [instance-var-assign]

poetry (https://github.com/python-poetry/poetry)
+ ERROR src/poetry/puzzle/provider.py:109:13-30: Cannot set instance variable `CONTEXT` from the class [instance-var-assign]

numpy-stl (https://github.com/WoLpH/numpy-stl)
+ ERROR stl/base.py:152:5-18: Cannot set instance variable `logger` from the class [instance-var-assign]

django-test-migrations (https://github.com/wemake-services/django-test-migrations)
+ ERROR django_test_migrations/contrib/unittest_case.py:63:9-35: Cannot set instance variable `_pre_migrate_receivers` from the class [instance-var-assign]
+ ERROR django_test_migrations/contrib/unittest_case.py:67:9-36: Cannot set instance variable `_post_migrate_receivers` from the class [instance-var-assign]

scrapy (https://github.com/scrapy/scrapy)
+ ERROR tests/test_feedexport_async.py:50:9-26: Cannot set instance variable `calls` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_lifecycle.py:37:9-28: Cannot set instance variable `update_listener` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_postprocess.py:539:13-30: Cannot set instance variable `open_file` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_postprocess.py:543:13-31: Cannot set instance variable `store_file` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_postprocess.py:567:13-30: Cannot set instance variable `open_file` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_postprocess.py:571:13-31: Cannot set instance variable `store_file` from the class [instance-var-assign]
+ ERROR tests/test_feedexport_postprocess.py:572:13-36: Cannot set instance variable `file_was_closed` from the class [instance-var-assign]
+ ERROR tests/utils/bases/spider.py:78:9-42: Cannot set instance variable `custom_settings` from the class [instance-var-assign]

porcupine (https://github.com/Akuli/porcupine)
+ ERROR porcupine/utils.py:143:13-26: Cannot set instance variable `tipwindow` from the class [instance-var-assign]
+ ERROR porcupine/utils.py:165:25-45: Cannot set instance variable `tipwindow` from the class [instance-var-assign]

discord.py (https://github.com/Rapptz/discord.py)
+ ERROR discord/app_commands/commands.py:1533:13-52: Cannot set instance variable `__discord_app_commands_group_name__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1535:13-52: Cannot set instance variable `__discord_app_commands_group_name__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1537:13-52: Cannot set instance variable `__discord_app_commands_group_name__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1538:13-59: Cannot set instance variable `__discord_app_commands_group_locale_name__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1542:17-63: Cannot set instance variable `__discord_app_commands_group_description__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1544:17-63: Cannot set instance variable `__discord_app_commands_group_description__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1546:13-59: Cannot set instance variable `__discord_app_commands_group_description__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1548:13-59: Cannot set instance variable `__discord_app_commands_group_description__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1549:13-66: Cannot set instance variable `__discord_app_commands_group_locale_description__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1552:13-52: Cannot set instance variable `__discord_app_commands_guild_only__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1555:13-61: Cannot set instance variable `__discord_app_commands_default_permissions__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1558:13-52: Cannot set instance variable `__discord_app_commands_has_module__` from the class [instance-var-assign]
+ ERROR discord/app_commands/commands.py:1559:9-48: Cannot set instance variable `__discord_app_commands_group_nsfw__` from the class [instance-var-assign]
+ ERROR discord/client.py:340:13-34: Cannot set instance variable `warn_nacl` from the class [instance-var-assign]
+ ERROR discord/client.py:344:13-34: Cannot set instance variable `warn_dave` from the class [instance-var-assign]
+ ERROR discord/ui/modal.py:113:13-22: Cannot set instance variable `title` from the class [instance-var-assign]

@rchen152 rchen152 added size/m and removed size/xl labels Nov 2, 2026
stroxler
stroxler approved these changes Nov 2, 2026
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Review automatically exported from Phabricator review in Meta.

@meta-codesync meta-codesync Bot closed this in 3783f5c Nov 2, 2026
@meta-codesync meta-codesync Bot added the Merged label Nov 2, 2026
@meta-codesync

meta-codesync Bot commented Nov 2, 2026

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This pull request has been merged in 3783f5c.

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@stroxler stroxler stroxler approved these changes

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new rule - assignment to instance variable from class

3 participants

@nitishagar @stroxler @rchen152