Search results

ENH: adding a filter (and bold) to header when writing to excel

Enhancement

IO Excelread_excel, to_excelread_excel, to_excel

Status: Open.

#61194 In pandas-dev/pandas;

· simonaubertbd opened on Mar 28, 2025

BUG: Boolean selection edge case.

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#61191 In pandas-dev/pandas;

· ptth222 opened on Mar 27, 2025

BUG: date comparison fails when series is all pd.NaT values

Bug

DatetimeDatetime data dtypeDatetime data dtype

good first issue

Status: Open.

#61188 In pandas-dev/pandas;

· imrehg opened on Mar 27, 2025

BUG: DataFrame.min raises TypeError when column contains mixed types (e.g., np.nan and datetime)

Bug

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

Reduction Operationssum, mean, min, max, etc.sum, mean, min, max, etc.

Status: Open.

#61187 In pandas-dev/pandas;

· tanjt107 opened on Mar 27, 2025

BUG: engine calamine lost 0 when read_excel from vlookup cell

Bug

IO Excelread_excel, to_excelread_excel, to_excel

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

Status: Open.

#61186 In pandas-dev/pandas;

· ryjfgjl opened on Mar 27, 2025

BUG: Negation of .str.isnumeric() changes dtype when pd.NA is present

Bug

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

StringsString extension data type and string dataString extension data type and string data

Status: Open.

#61182 In pandas-dev/pandas;

· noahblakesmith opened on Mar 26, 2025

BUG: Performance issue with fillna() after merging DataFrames

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Needs InfoClarification about behavior needed to assess issueClarification about behavior needed to assess issue

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#61180 In pandas-dev/pandas;

· sjfakharian opened on Mar 26, 2025

BUG: Inconsistency when converting week PeriodIndex into DatetimeIndex with astype("datetime64[ns]")

Bug

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

Status: Open.

#61177 In pandas-dev/pandas;

· dbalabka opened on Mar 25, 2025

BUG: AttributeError on method call after binary operation in eval expression

Bug

expressionspd.eval, querypd.eval, query

Status: Open.

#61175 In pandas-dev/pandas;

· stewit opened on Mar 25, 2025

 ·  

3.0

BUG: pd.read_csv() on empty files should give an empty dataframe pd.DataFrame()

Bug

Closing CandidateMay be closeable, needs more eyeballsMay be closeable, needs more eyeballs

IO CSVread_csv, to_csvread_csv, to_csv

Status: Open.

#61172 In pandas-dev/pandas;

· xuancong84 opened on Mar 24, 2025

BUG: DataFrame.dtypes.to_json OverflowError: Maximum recursion level reached

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Open.

#61170 In pandas-dev/pandas;

· Aliebc opened on Mar 23, 2025

ENH: Enable nsmallest/nlargest on object dtype

Enhancement

Filterse.g. head, tail, nthe.g. head, tail, nth

Sortinge.g. sort_index, sort_valuese.g. sort_index, sort_values

Status: Open.

#61166 In pandas-dev/pandas;

· Gri72 opened on Mar 22, 2025