Internal Error from using BigQuery Google Cloud library

[filippomanzardo]

Crash Report

Hey guys, I'm getting this recurring Internal Error and MyPy became unusable.

/Users/me/repositories/my-repo/.venv/lib/python3.10/site-packages/google/cloud/bigquery/job/base.py:700: error: INTERNAL ERROR -- Please try using mypy master on GitHub:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 0.961
Traceback (most recent call last):
  File "mypy/checker.py", line 431, in accept
  File "mypy/nodes.py", line 747, in accept
  File "mypy/checker.py", line 782, in visit_func_def
  File "mypy/checker.py", line 793, in _visit_func_def
  File "mypy/checker.py", line 1500, in check_method_override
  File "mypy/checker.py", line 1528, in check_method_or_accessor_override_for_base
  File "mypy/checker.py", line 1614, in check_method_override_for_base_with_name
  File "mypy/checker.py", line 1776, in check_override
  File "mypy/messages.py", line 845, in signature_incompatible_with_supertype
  File "mypy/messages.py", line 867, in pretty_callable_or_overload
  File "mypy/messages.py", line 1979, in pretty_callable
AttributeError: attribute 'arguments' of 'FuncDef' undefined
/Users/me/repositories/my-repo/.venv/lib/python3.10/site-packages/google/cloud/bigquery/job/base.py:700: : note: use --pdb to drop into pdb

To Reproduce

From the command line, inside my source code:

mypy .

Your Environment

I'm using poetry for managing packages
Since it generates from google.cloud.bigquery, this are the versions I'm running on:

[[package]]
name = "google-cloud-bigquery"
version = "3.2.0"
description = "Google BigQuery API client library"
category = "main"
optional = false
python-versions = ">=3.6, <3.11"

[[package]]
name = "mypy"
version = "0.961"
description = "Optional static typing for Python"
category = "dev"
optional = false
python-versions = ">=3.6"

• Mypy version used: 0.961
• Mypy command-line flags: None
• Mypy configuration options from mypy.ini (and other config files):

[mypy]


check_untyped_defs = True
disallow_any_generics = True
disallow_incomplete_defs = True

disallow_subclassing_any = False
disallow_untyped_calls = True
disallow_untyped_decorators = True
disallow_untyped_defs = True

implicit_reexport = True
no_implicit_optional = True
strict_equality = True
strict_optional = True
warn_redundant_casts = True
warn_return_any = True
warn_unused_ignores = True

[mypy-gunicorn.*]
ignore_missing_imports = True

[mypy-environ.*]
ignore_missing_imports = True

[mypy-uvicorn.*]
ignore_missing_imports = True

[mypy-google.cloud.*]
ignore_missing_imports = True

• Python version used: 3.10.3
• Operating system and version: macOS Monterey 12.1

[AlexWaygood]

Looks like it might be the same crash as #11899/#11449; could you possibly see whether #12324 fixes it?

[filippomanzardo]

Yeah! rm -rf .mypy_cache works, thank you ❤️