Type error after upgrading to mypy 1.4.1

[scottmatth]

After upgrading from mypy 1.30 to 1.41 I ran mypy against our code base to test that there were no compatibility issues:
mypy --show-traceback .

The following error is what we received:

/Users/scottmat/Development/gpo/venv/lib/python3.10/site-packages/pydantic/env_settings.py:22: 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: 1.4.1
Traceback (most recent call last):
File "mypy/semanal.py", line 6451, in accept
File "mypy/nodes.py", line 1139, in accept
File "mypy/semanal.py", line 1582, in visit_class_def
File "mypy/semanal.py", line 1667, in analyze_class
File "mypy/semanal.py", line 1694, in analyze_class_body_common
File "mypy/semanal.py", line 1777, in apply_class_plugin_hooks
File "pydantic/mypy.py", line 154, in pydantic.mypy.PydanticPlugin._pydantic_model_class_maker_callback
File "pydantic/mypy.py", line 321, in pydantic.mypy.PydanticModelTransformer.transform
File "pydantic/mypy.py", line 500, in pydantic.mypy.PydanticModelTransformer.add_construct_method
TypeError: init() missing required argument 'default' (pos 6)
/Users/scottmat/Development/gpo/venv/lib/python3.10/site-packages/pydantic/env_settings.py:22: : note: use --pdb to drop into pdb

Your Environment

mypy --show-traceback .
Python version: Python 3.10.10
mypy version: 1.4.1
pydantic version: 1.10.7

Configuration in pyproject:

[tool.mypy]
plugins = ["pydantic.mypy","sqlalchemy.ext.mypy.plugin"]
[tool.pydantic-mypy]
init_forbid_extra = true
init_typed = true
warn_required_dynamic_aliases = true
warn_untyped_fields = true

[AlexWaygood]

Duplicate of #15485.

It's an issue with pydantic's mypy plugin rather than mypy itself. You'll need to upgrade your version of pydantic; it's fixed in the latest pydantic version.

[scottmatth]

Duplicate of #15485.

It's an issue with pydantic's mypy plugin rather than mypy itself. You'll need to upgrade your version of pydantic; it's fixed in the latest pydantic version.

Thank you. I'll try that.