Question

我在名称变量上使用groupby，我想根据字符串变量删除行的子集

如果该组中没有特定字符串，如何删除行子集？

        user-id                         time              event
0   AMsySZa--NczTTJGpJvNQTNri4nh    28/06/2016 11:18    CONVERSION
1   AMsySZa--NczTTJGpJvNQTNri4nh    28/06/2016 10:40    Organic Search
2   AMsySZa--NczTTJGpJvNQTNri4nh    26/06/2016 10:06    Organic Search
3   AMsySZa--NczTTJGpJvNQTNri4nh    07/05/2016 19:27    Display
4   AMsySZa-05iZ7gKLfZQ3_kw8l-mO    16/06/2016 09:05    CONVERSION
5   AMsySZa-05iZ7gKLfZQ3_kw8l-mO    21/06/2016 09:10    CONVERSION
6   AMsySZa-15QiL8a5kcw9LvAtBLiE    29/06/2016 20:35    Display
7   AMsySZa-15QiL8a5kcw9LvAtBLiE    27/05/2016 06:46    Display
8   AMsySZa-15QiL8a5kcw9LvAtBLiE    15/05/2016 00:17    Display
9   AMsySZa-15QiL8a5kcw9LvAtBLiE    15/05/2016 00:17    Display

我想要删除任何没有单词＆＃34;转换＆＃34;的子集。我的预期输出是：

                        user-id              time           event
0  AMsySZa--NczTTJGpJvNQTNri4nh  28/06/2016 11:18      CONVERSION
1  AMsySZa--NczTTJGpJvNQTNri4nh  28/06/2016 10:40  Organic Search
2  AMsySZa--NczTTJGpJvNQTNri4nh  26/06/2016 10:06  Organic Search
3  AMsySZa--NczTTJGpJvNQTNri4nh  07/05/2016 19:27         Display
4  AMsySZa-05iZ7gKLfZQ3_kw8l-mO  16/06/2016 09:05      CONVERSION
5  AMsySZa-05iZ7gKLfZQ3_kw8l-mO  21/06/2016 09:10      CONVERSION

Answer 1

您正在使用groupby + any寻找过滤操作：

m = (df.event.str.contains('CONVERSION')
       .groupby(df['user-id'])
       .transform('any'))
df[m]

                        user-id              time           event
0  AMsySZa--NczTTJGpJvNQTNri4nh  28/06/2016 11:18      CONVERSION
1  AMsySZa--NczTTJGpJvNQTNri4nh  28/06/2016 10:40  Organic Search
2  AMsySZa--NczTTJGpJvNQTNri4nh  26/06/2016 10:06  Organic Search
3  AMsySZa--NczTTJGpJvNQTNri4nh  07/05/2016 19:27         Display
4  AMsySZa-05iZ7gKLfZQ3_kw8l-mO  16/06/2016 09:05      CONVERSION
5  AMsySZa-05iZ7gKLfZQ3_kw8l-mO  21/06/2016 09:10      CONVERSION

如果没有任何行符合特定条件，则删除组中的所有行

1 个答案: