Batuhan <batuhanosmantask...@gmail.com> added the comment:
We might need to tweak the documentation @pablogsal,
> Unparse an ast.AST object and generate a string with code that would produce
> an equivalent ast.AST object if parsed back with ast.parse().
If I interpret `equivalent` correctly, this explanation is false under cases
like constant nodes has an immutable container value (which they can).
>>> def wrap(expr):
... return ast.Module(body=[ast.Expr(expr)], type_ignores=[])
...
>>> constant_tuple = wrap(ast.Constant(value=(1, 2, 3), kind=None))
>>> normalpy_tuple = ast.parse("(1, 2, 3)")
>>> ast.unparse(constant_tuple) == ast.unparse(normalpy_tuple)
True
>>> ast.dump(ast.parse(ast.unparse(constant_tuple))) != ast.dump(constant_tuple)
True
>>> ast.dump(ast.parse(ast.unparse(constant_tuple))) == ast.dump(normalpy_tuple)
True
This isn't a bug in the code because there is no way we can generate a string
that can produce a constant tuple. But this makes the docstring false, at least
in certain cases.
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue38870>
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