Top pandas issues

df.assign in for loop

Usage Question
mirco69 picture mirco69·6 Nov 2019·2 Comments

Merge on CategoricalIndex fails if left_index=True & right_index=True, but not if on={index}

Bug Categorical Reshaping
OliverHofkens picture OliverHofkens·28 Aug 2019·2 Comments

DataFrameGroupBy.quantile raises for non-numeric dtypes rather than dropping columns

Bug Groupby Regression quantile
TomAugspurger picture TomAugspurger·13 Aug 2019·10 Comments

Filtering dataframe with sparse column leads to NAs in sparse column

Bug Regression Sparse
stelsemeyer picture stelsemeyer·6 Aug 2019·16 Comments
👍2

GroupBy(axis=1) Does Not Offer Implicit Selection By Columns Name(s)

Bug Groupby
lebigot picture lebigot·26 Jul 2019·5 Comments

pd.to_csv gives '__init__() got an unexpected keyword argument 'tupleize_cols'`

Usage Question
vciulei picture vciulei·21 Jul 2019·4 Comments

Nlargest on boolean return False first

Algos Bug
Wirg picture Wirg·19 Apr 2019·6 Comments

A problem

Usage Question
StepfenShawn picture StepfenShawn·5 Apr 2019·6 Comments

pd.Series.loc.__getitem__ promotes to float64 instead of raising KeyError

Bug Indexing
stuz5000 picture stuz5000·30 Mar 2019·16 Comments

Timestamp incorrectly handles datetime64 with exotic units

Bug Error Reporting Timeseries
cbarrick picture cbarrick·9 Mar 2019·5 Comments
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