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ast.parse() abuses assert for error checking #95066

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@jwilk

Description

@jwilk

Bug report

ast.parse() uses the assert statement to validate thefeature_version argument:

$python3 -c'import ast; ast.parse("print", feature_version=(2, 7))'Traceback (most recent call last):  File "<string>", line 1, in <module>  File "/home/jwilk/.local/lib/python3.11/ast.py", line 45, in parse    assert major == 3AssertionError

This is bad because the check will go away if you enable optimizations:

$python3 -O -c'import ast; ast.parse("print", feature_version=(2, 7))'&&echo yayyay

Your environment

Python 3.11.0b4

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