GeezerVison is showing github.com — gh-146406: add clear() cross-language hint for immutable types by mvanhorn · Pull Request #149927 · python/cpython
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mvanhorn
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May 16, 2026
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Follow-up to #146407. Calling .clear() on a tuple, frozenset, or frozendict now suggests the mutable counterpart, mirroring the existing append/extend/insert/remove/discard/update entries for the same immutable types.
Requested by @vstinner after @henryiii flagged that .clear() was the first method they tried on these types in the new hint table from #146407 and got no useful suggestion.
>>> (1, 2, 3).clear()
AttributeError: 'tuple' object has no attribute 'clear'. Did you mean to use a 'list' object?
>>> frozenset({1, 2, 3}).clear()
AttributeError: 'frozenset' object has no attribute 'clear'. Did you mean to use a 'set' object?
Verified locally: ./python.exe -m test test_traceback 434/434 passing.
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Follow-up to PR python#146407. Calling .clear() on a tuple, frozenset, or
frozendict now suggests the mutable counterpart (list / set / dict),
mirroring the existing append/extend/insert/remove/discard/update
entries for the same immutable types.
Triggered by @henryiii noticing that .clear() was the first method
they tried on these types and got no useful suggestion, and
@vstinner agreeing it was worth adding.
Signed-off-by: Matt Van Horn <[email protected]>
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vstinner
vstinner approved these changes
picnixz
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