Author

耿远昊，华东师范大学统计学本科，威斯康星大学麦迪逊分校统计学硕士，Datawhale成员，《pandas数据处理与分析》作者。pandas contributor，积极参与pandas开源社区生态建设，包括漏洞修复、功能实现与性能优化等，对pandas在数据处理与分析中的应用有丰富经验。

Contributions to pandas project

Merged

• #33783 DOC: fix doc for crosstab with Categorical data input

• #36516 DOC: Correct inconsistent description on default DateOffset setting

• #37607 BUG: nunique not ignoring both None and np.nan

• #37830 BUG: MultiIndex.drop does not raise if labels are partially found

• #38029 BUG: unstack with missing levels results in incorrect index names

• #38089 BUG: merge_ordered fails with list-like left_by or right_by

• #38170 BUG: unexpected merge_ordered results caused by wrongly groupby

• #38173 BUG: array-like quantile fails on column groupby

• #38257 BUG: groupby.apply on the NaN group drops values with original axes return

• #38408 ENH: add end and end_day origin for resample

• #38492 BUG: CategoricalIndex.reindex fails when Index passed with labels all in category

• #44827 PERF: faster Dataframe construction from recarray

• #46546 BUG: pd.concat with identical key leads to multi-indexing error

• #46654 TST: add validation checks on levels keyword from pd.concat

• #46656 BUG: df.nsmallest get wrong results when NaN in the sorting column

• #47605 BUG: df.groupby().resample()[[cols]] without key columns raise KeyError

• #47685 TST: avoid sort when concat int-index Dataframes with sort=False

• #47708 BUG: json_normalize raises boardcasting error with list-like metadata

• #47714 BUG: df.fillna ignores axis when DataFrame is single block

• #47717 TST: add test for groupby with dropna=False on multi-index

• #47731 BUG: groupby.corrwith fails with axis=1 and other=df

• #47757 BUG: wide_to_long fails when stubnames miss and i contains string column

• #47779 PERF: efficient argmax/argmin for SparseArray

• #47810 BUG: fix SparseArray.unique IndexError and _first_fill_value_loc algo

Mail

1801214626@qq.com

Github

https://github.com/GYHHAHA

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