I would like to pass a dictionary to a method foo that expects a TypedDict without explicitly mentioning the type. When I pass the dictionary directly to the method, everything is good. However, when I assign the dictionary to a variable configs first, mypy complains about incompatible types. Interestingly, PyCharm does not complain about foo(configs) as long as configs contains the correct keys and values. I could add type information to configs at [1] below but wonder if I could improve the typing to make the usage of foo and Params less verbose.

from typing import TypedDict


class Params(TypedDict):
    a: str
    b: str


def foo(config: Params):
    pass


foo({"a": "a", "b": "b"})  # Okay

configs = {"a": "a", "b": "b"}  # [1]
foo(configs)  # error: Argument 1 to "foo" has incompatible type "dict[str, str]"; expected "Params"  [arg-type]