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STY: Add strict=True to zip() calls in pandas/core/reshape/encoding.py (Ruff B905) #62982

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Merged
merged 2 commits into from
Nov 4, 2025
Merged

STY: Add strict=True to zip() calls in pandas/core/reshape/encoding.py (Ruff B905) #62982

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b1a2267
Enhance zip calls with strict parameter
IngramBJ Nov 4, 2025
d43efb9
some changes to fix bugs
IngramBJ Nov 4, 2025
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4 changes: 2 additions & 2 deletions pandas/core/reshape/encoding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -325,15 +325,15 @@ def get_empty_frame(data) -> DataFrame:
codes = codes[mask]
n_idx = np.arange(N)[mask]

for ndx, code in zip(n_idx, codes):
for ndx, code in zip(n_idx, codes, strict=True):
sp_indices[code].append(ndx)

if drop_first:
# remove first categorical level to avoid perfect collinearity
# GH12042
sp_indices = sp_indices[1:]
dummy_cols = dummy_cols[1:]
for col, ixs in zip(dummy_cols, sp_indices):
for col, ixs in zip(dummy_cols, sp_indices, strict=True):
sarr = SparseArray(
np.ones(len(ixs), dtype=dtype),
sparse_index=IntIndex(N, ixs),
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