如何根据多个条件对Pandas DataFrame进行排序? [英] How to sort a Pandas DataFrame according to multiple criteria?
问题描述
我有以下DataFrame，其中包含歌曲名称，其峰值图表位置以及在1号位置花费的星期数.
I have the following DataFrame containing song names, their peak chart positions and the number of weeks they spent at position no 1:
Song Peak Weeks
76 Paperback Writer 1 16
117 Lady Madonna 1 9
118 Hey Jude 1 27
22 Can't Buy Me Love 1 17
29 A Hard Day's Night 1 14
48 Ticket To Ride 1 14
56 Help! 1 17
109 All You Need Is Love 1 16
173 The Ballad Of John And Yoko 1 13
85 Eleanor Rigby 1 14
87 Yellow Submarine 1 14
20 I Want To Hold Your Hand 1 24
45 I Feel Fine 1 15
60 Day Tripper 1 12
61 We Can Work It Out 1 12
10 She Loves You 1 36
155 Get Back 1 6
8 From Me To You 1 7
115 Hello Goodbye 1 7
2 Please Please Me 2 20
92 Strawberry Fields Forever 2 12
93 Penny Lane 2 13
107 Magical Mystery Tour 2 16
176 Let It Be 2 14
0 Love Me Do 4 26
157 Something 4 9
166 Come Together 4 10
58 Yesterday 8 21
135 Back In The U.S.S.R. 19 3
164 Here Comes The Sun 58 19
96 Sgt. Pepper's Lonely Hearts Club Band 63 12
105 With A Little Help From My Friends 63 7
我想按流行度对这些歌曲进行排名，因此我想根据以下标准对它们进行排序:到达最高位置的歌曲排在第一位，但是如果打成平局，剩下的歌曲在最长的图表中排在首位.
I'd like to rank these songs in order of popularity, so I'd like to sort them according to the following criteria: songs that reached the highest position come first, but if there is a tie, the songs that remained in the charts for the longest come first.
我似乎无法弄清楚如何在Pandas中做到这一点.
I can't seem to figure out how to do this in Pandas.
推荐答案
在大熊猫0.9.1及更高版本上，此方法应该有效(这适用于0.10.0b1):
On pandas 0.9.1 and higher this should work (this is with 0.10.0b1):
(从Pandas 0.19开始，不推荐使用方法sort_index.请首选
( As of Pandas 0.19, method sort_index is deprecated. Prefer sort_values)
In [23]: songs.sort_index(by=['Peak', 'Weeks'], ascending=[True, False])
Out[23]:
Song Peak Weeks
10 She Loves You 1 36
118 Hey Jude 1 27
20 I Want To Hold Your Hand 1 24
22 Can't Buy Me Love 1 17
56 Help! 1 17
76 Paperback Writer 1 16
109 All You Need Is Love 1 16
45 I Feel Fine 1 15
29 A Hard Day's Night 1 14
48 Ticket To Ride 1 14
85 Eleanor Rigby 1 14
87 Yellow Submarine 1 14
173 The Ballad Of John And Yoko 1 13
60 Day Tripper 1 12
61 We Can Work It Out 1 12
117 Lady Madonna 1 9
8 From Me To You 1 7
115 Hello Goodbye 1 7
155 Get Back 1 6
2 Please Please Me 2 20
107 Magical Mystery Tour 2 16
176 Let It Be 2 14
93 Penny Lane 2 13
92 Strawberry Fields Forever 2 12
0 Love Me Do 4 26
166 Come Together 4 10
157 Something 4 9
58 Yesterday 8 21
135 Back In The U.S.S.R. 19 3
164 Here Comes The Sun 58 19
96 Sgt. Pepper's Lonely Hearts Club Band 63 12
105 With A Little Help From My Friends 63 7
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