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fix(utils): recursively copy tuples in deepcopy_minimal to prevent in-place mutation #1270

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fix(utils): recursively copy tuples in deepcopy_minimal to prevent in-place mutation #1270

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3 changes: 3 additions & 0 deletions src/anthropic/_utils/_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -181,13 +181,16 @@ def deepcopy_minimal(item: _T) -> _T:

- mappings, e.g. `dict`
- list
- tuple (recursively copies elements so mutable items inside are not shared)

This is done for performance reasons.
"""
if is_mapping(item):
return cast(_T, {k: deepcopy_minimal(v) for k, v in item.items()})
if is_list(item):
return cast(_T, [deepcopy_minimal(entry) for entry in item])
if isinstance(item, tuple):
return cast(_T, tuple(deepcopy_minimal(entry) for entry in item))
return item


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