Feature or enhancement

Proposal:

Syntax warnings during AST parsing use _PyCompile_Warn to setup their warning context automatically. Though the filename is correct, the module is inferred and often not helpful. This is especially an issue when trying to ignore specific errors in a CI environment with pytest where the module is suddenly importlib._bootstrap. In other cases with python alone it's often just sys.

AFAICT this applies mainly to the "is" with '...' literal and 'return' in 'finally' block warnings.

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To reproduce

# test.py
class A:
    def __init__(self):
        self.var = 2

    def func(self) -> bool:
        return self.var is 2

./python.exe -W error::SyntaxWarning:sys test.py

  File "/.../test.py", line 7
    return self.var is 2
           ^^^^^^^^^^^^^
SyntaxError: "is" with 'int' literal. Did you mean "=="?

Note: The SyntaxWarning is changed to an error for module sys where test would have been the expected module.

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The SyntaxWarning is triggered here:

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response