pandas 以相反的顺序处理系列(最新在前)
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时间:2020-09-13 20:48:25 来源:igfitidea点击:
Working With Series in Reverse Order (Latest First)
提问by DonQuixote
How can I reverse sort order of DataSeries in Pandas so that I'm working with them in descending order?
如何反转 Pandas 中 DataSeries 的排序顺序,以便我按降序使用它们?
回答by Wouter Overmeire
In [28]: s = pd.Series([20, 10, 30], ['c', 'a', 'b'])
In [29]: s
Out[29]:
c 20
a 10
b 30
dtype: int64
Sorting on the index
按索引排序
In [30]: s.sort_index(ascending=False)
Out[30]:
c 20
b 30
a 10
dtype: int64
sorting on the values
对值进行排序
In [31]: s.sort()
In [32]: s[::-1]
Out[32]:
b 30
c 20
a 10
dtype: int64

