Demonstration of a confusion change between Pyright 1.1.396 and 1.1.397

pyright_397_dict_arg.py

# pyright: strict
"""
uv run --with "pyright==1.1.396" pyright  -> No errors

uv run --with "pyright==1.1.397 --> 3 errors, 0 warnings, 0 informations


Code changes:  https://github.com/microsoft/pyright/compare/1.1.396...1.1.397
"""

from typing import Any, TypedDict

from pydantic import BaseModel


class Obj(object):
    def __init__(self, dictarg: dict[str, Any]): ...


Obj(dictarg=dict(got=[]))  # bad
Obj(dictarg={"got": []})  # ok


class TD(TypedDict):
    dictarg: dict[str, Any]


TD(dictarg={"got": []})  # ok
TD(dictarg=dict(got=[]))  # bad


class PydanticModel(BaseModel):
    dictarg: dict[str, Any]


PydanticModel(dictarg={"got": []})  # ok
PydanticModel(dictarg=dict(got=[]))  # bad