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Automatic PR for 1691c9e3-6c6e-42e5-a6a7-ea35961927a7 #62

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Automatic PR for 1691c9e3-6c6e-42e5-a6a7-ea35961927a7 #62

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11 changes: 1 addition & 10 deletions pandas/core/internals/concat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -254,15 +254,6 @@ def _concat_homogeneous_fastpath(
"""
# assumes
# all(_is_homogeneous_mgr(mgr, first_dtype) for mgr, _ in in mgrs_indexers)

if all(not indexers for _, indexers in mgrs_indexers):
# https://github.com/pandas-dev/pandas/pull/52685#issuecomment-1523287739
arrs = [mgr.blocks[0].values.T for mgr, _ in mgrs_indexers]
arr = np.concatenate(arrs).T
bp = libinternals.BlockPlacement(slice(shape[0]))
nb = new_block_2d(arr, bp)
return nb

arr = np.empty(shape, dtype=first_dtype)

if first_dtype == np.float64:
Expand Down Expand Up @@ -593,4 +584,4 @@ def _is_uniform_join_units(join_units: list[JoinUnit]) -> bool:
# no blocks that would get missing values (can lead to type upcasts)
# unless we're an extension dtype.
all(not ju.is_na or ju.block.is_extension for ju in join_units)
)
)