按日期对列进行排序

Question

我正在尝试对“Mon18”表中的“Month”列进行排序，使其从 1 月到 12 月运行，并带有相应的计数。 当我尝试对列进行排序时，它会按最高计数或按字母顺序对“月份”列进行排序。 请参见下面的示例：

print (df)
            Months  Count
10      April 2018    684
3      August 2018   1098
1    December 2018   1207
11   February 2018    642
8     January 2018    847
5        July 2018   1040
6        June 2018    986
9       March 2018    809
7         May 2018    854
0    November 2018   1215
2     October 2018   1128
4   September 2018   1062

Answer 1

想法是将列转换为日期时间，并将Series.argsort用于传递给DataFrame.iloc的索引：

df = df.iloc[pd.to_datetime(df['Months'], format='%B %Y').argsort()]
print (df)
            Months  Count
8     January 2018    847
11   February 2018    642
9       March 2018    809
10      April 2018    684
7         May 2018    854
6        June 2018    986
5        July 2018   1040
3      August 2018   1098
4   September 2018   1062
2     October 2018   1128
0    November 2018   1215
1    December 2018   1207