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Fix mypy error in testing #44767

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Fix mypy error in testing #44767

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6 changes: 4 additions & 2 deletions pandas/_testing/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1083,8 +1083,10 @@ def shares_memory(left, right) -> bool:
if isinstance(left, ExtensionArray) and left.dtype == "string[pyarrow]":
# https://github.com/pandas-dev/pandas/pull/43930#discussion_r736862669
if isinstance(right, ExtensionArray) and right.dtype == "string[pyarrow]":
left_pa_data = left._data
right_pa_data = right._data
# for mypy
left_pa_data = getattr(left, "_data")
right_pa_data = getattr(right, "_data")
assert right_pa_data is not None and left_pa_data is not None
left_buf1 = left_pa_data.chunk(0).buffers()[1]
right_buf1 = right_pa_data.chunk(0).buffers()[1]
return left_buf1 == right_buf1
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