codeobject.co_nlocals and codeobject.co_varnames are incorrect for function definition · Issue #133326 · python/cpython · GitHub | Latest TMZ Celebrity News & Gossip | Watch TMZ Live
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codeobject.co_nlocals and codeobject.co_varnames are incorrect for function definition #133326

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@Enigma3166

Description

@Enigma3166

Bug report

Bug description:

The problem is with non-parameter-local-variable inner-function-references. In the code example, the 'c' in the line '0, a, c' is causing the problem (as described in this issue's title). Replacing '0, a, c' with '0, a' works just fine.

def fn1(a, b):
    c = 0
    d = 0
    def fn2():
        0, a, c
print()
print(fn1.__code__.co_nlocals)                                                                      ### incorrect locals count
print(fn1.__code__.co_varnames)                                                                     ### incorrect locals tuple
print(fn1.__code__.co_cellvars)
print(tuple(sorted(   set(fn1.__code__.co_varnames) | set(fn1.__code__.co_cellvars)   )))           ### correct (sorted) locals tuple
print()

CPython versions tested on:

3.13

Operating systems tested on:

Windows

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    interpreter-core(Objects, Python, Grammar, and Parser dirs)pendingThe issue will be closed if no feedback is providedtype-bugAn unexpected behavior, bug, or error

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