Mypy type hinting error for direct column type annotations

[Girmii]

Describe the bug
A clear and concise description of what the bug is.

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of pandera.
• (optional) I have confirmed this bug exists on the main branch of pandera.

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Mypy throws an error when using DataFrameModel field names as strings with the direct column type annotations.

Code Sample, a copy-pastable example

import pandera as pa
from pandera.typing import Series


class A(pa.DataFrameModel):
    b: float = pa.Field(nullable=False)
    c: Series[float] = pa.Field(nullable=False)


def print_string(string: str):
    print(f"type: {type(string)}, value: {string}")


if __name__ == "__main__":
    print_string(A.b)  # line 15
    print_string(A.c)

Script output

type: <class 'str'>, value: b
type: <class 'str'>, value: c

Mypy output

src/pandera_typing.py:15: error: Argument 1 to "print_string" has incompatible type "float"; expected "str"  [arg-type]
Found 1 error in 1 file (checked 1 source file)

Expected behavior

I would expect the type hinting to be consistent across the explicit and implicit column type annotation, and thus for Mypy to interpret the direct column annotation names as a strings.

Versions:

• Python 3.11.0
• pandas==2.2.0
• pandas-stubs==2.1.4.231227
• pandera==0.19.3
• mypy 1.10.0 (compiled: yes)