New submission from Dutcho <dutcho@ziggo.nl>: The standard library documentation on module inspect starts with an overview of types and attributes. This overview (in all Python versions) states: code.co_names: tuple of names of local variables code.co_varnames: tuple of names of arguments and local variables That suggests the argument names are set(code.co_varnames) - set(code.co_names), which is incorrect. I think the attribute description should be: code.co_names: tuple of names of used global and built-in variables

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def f(x): a = 1; print(f, a) assert f.__code__.co_varnames == ('x', 'a') # argument and local, in that order assert set(f.__code__.co_names) == set(('f', 'print')) # global and built-in (don't care order), not local

---------- assignee: docs@python components: Documentation messages: 404068 nosy: Dutcho, docs@python priority: normal severity: normal status: open title: stdlib inspect documentation on code.co_names is incorrect versions: Python 3.10, Python 3.11, Python 3.6, Python 3.7, Python 3.8, Python 3.9 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue45492> _______________________________________