Top pandas issues

weighted mean

Enhancement Numeric Window
bgrayburn picture bgrayburn·30 Apr 2015·46 Comments
👍1

groupby with categorical type returns all combinations

Categorical Groupby
bear24rw picture bear24rw·19 Sep 2017·17 Comments

BUG: groupby.agg with more than one lambda is not allowed?

Groupby
acorbe picture acorbe·20 May 2014·11 Comments

API/DEPR: Deprecate inplace parameter

API Design Deprecate Needs Discussion
gfyoung picture gfyoung·29 May 2017·41 Comments
👍17 👎2

Pivot / unstack on large data frame does not work int32 overflow

Numeric Reshaping
MarkiesFredje picture MarkiesFredje·8 May 2019·42 Comments
👍21

Default value for missing values on merge

Dtypes Reshaping
dniku picture dniku·6 Mar 2018·8 Comments
👍5

adding static type checking with mypy

3 Compat CI Clean Typing
jreback picture jreback·21 Oct 2016·38 Comments
👍13

Feature Request: pd.DataFrame() should flatten nested dicts when given list of dicts

API Design Enhancement IO JSON Reshaping
kay1793 picture kay1793·5 Oct 2014·9 Comments

Support or default to less detailed datetime64

Enhancement Timeseries
CarstVaartjes picture CarstVaartjes·2 Jun 2014·38 Comments
👍6

DEPR: let's deprecate

Deprecate Master Tracker
jreback picture jreback·13 Nov 2017·42 Comments
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