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Pull requests: pandas-dev/pandas
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BUG: #66356 - Fix 4 segfaults from ujson_dumps values that are abnormal
#66357
opened Jul 17, 2026 by
stestagg
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4 of 7 tasks
PERF: avoid redundant Index.equals calls in pd.concat
Performance
Memory or execution speed performance
#66355
opened Jul 16, 2026 by
natmokval
Contributor
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doc: update fill_value parameter documentation for Series comparison methods
#66354
opened Jul 16, 2026 by
Dodothereal
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BUG: read_sql with dtype_backend="pyarrow" returns date/time as string (#56551)
#66353
opened Jul 16, 2026 by
aboderinsamuel
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6 of 7 tasks
BUG: normalize missing groupby MultiIndex codes
#66352
opened Jul 16, 2026 by
xoxonut
Contributor
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6 of 7 tasks
PERF: fix performance regression in string construction from GH-65831
#66351
opened Jul 16, 2026 by
Alvaro-Kothe
Member
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3 of 7 tasks
BUG: Do not force re.UNICODE if re.ASCII flag is passed
#66350
opened Jul 16, 2026 by
ajayraj30002
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5 of 7 tasks
BUG: setitem with nullable NA Series and non-default index raised (GH#62473)
#66345
opened Jul 15, 2026 by
gaurav0107
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7 tasks done
BUG: Fix parallel read_csv divergence with low_memory=False and EmptyDataError (#66259)
#66344
opened Jul 15, 2026 by
GiTaDi-CrEaTe
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BUG: Fix str.split on categorical dtype returning string lists (# 66341)
#66343
opened Jul 15, 2026 by
benhurstephen
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2 tasks done
DOC: clarify sort_index determinism to fix #63154
#66340
opened Jul 15, 2026 by
wasim-builds
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PERF: use pyarrow kernel for Series.str.zfill with ArrowStringArray
#66339
opened Jul 15, 2026 by
fangchenli
Member
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5 of 7 tasks
BUG: interpolate with an ArrowDtype temporal index raised
#66338
opened Jul 15, 2026 by
fangchenli
Member
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6 of 7 tasks
CLN: remove unreachable ArrowDtype exclusion in _factorize_keys
Clean
#66337
opened Jul 14, 2026 by
fangchenli
Member
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3 of 6 tasks
BUG: skew/kurt on ArrowDtype returned the biased statistic; kurt raised
#66336
opened Jul 14, 2026 by
fangchenli
Member
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6 of 7 tasks
DOC: Clarify PeriodIndex.from_fields scalar inputs
#66334
opened Jul 14, 2026 by
ShiroKSH
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4 of 7 tasks
BUG: Allow disabling ChainedAssignmentError via PANDAS_CHAINED_WARNIN…
#66318
opened Jul 13, 2026 by
abhiramvsmg
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ERR: clearer messages for various cryptic errors
#66311
opened Jul 13, 2026 by
jbrockmendel
Member
•
Draft
11
DOC: batch of documentation clarifications
#66308
opened Jul 12, 2026 by
jbrockmendel
Member
•
Draft
19
BUG: DataFrame.loc/iloc setitem with empty or boolean column indexer on EA dtypes (GH#66255)
#66304
opened Jul 12, 2026 by
chang-pro
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6 of 7 tasks
REF: Use moments accumulator from libalgos to compute variance
#66302
opened Jul 12, 2026 by
Alvaro-Kothe
Member
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8 of 9 tasks
BUG: Save and restore user SQLite adapters in to_sql() (GH#64337)
#66297
opened Jul 11, 2026 by
q121212
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4 tasks done
BUG: Register SQLite adapters only once per process (GH#64337)
#66296
opened Jul 11, 2026 by
q121212
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5 tasks done
BUG: concat DatetimeIndex freq depends on input order (GH#64253)
#66295
opened Jul 11, 2026 by
gaurav0107
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4 tasks done
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