我有一个数据框
site1 time1 site2 time2 site3 time3 site4 time4 site5 time5 ... time6 site7 time7 site8 time8 site9 time9 site10 time10 target
session_id
21669 56 2013-01-12 08:05:57 55.0 2013-01-12 08:05:57 NaN NaT NaN NaT NaN NaT ... NaT NaN NaT NaN NaT NaN NaT NaN NaT 0
54843 56 2013-01-12 08:37:23 55.0 2013-01-12 08:37:23 56.0 2013-01-12 09:07:07 55.0 2013-01-12 09:07:09 NaN NaT ... NaT NaN NaT NaN NaT NaN NaT NaN NaT 0
77292 946 2013-01-12 08:50:13 946.0 2013-01-12 08:50:14 951.0 2013-01-12 08:50:15 946.0 2013-01-12 08:50:15 946.0 2013-01-12 08:50:16 ... 2013-01-12 08:50:16 948.0 2013-01-12 08:50:16 784.0 2013-01-12 08:50:16 949.0 2013-01-12 08:50:17 946.0 2013-01-12 08:50:17 0
114021 945 2013-01-12 08:50:17 948.0 2013-01-12 08:50:17 949.0 2013-01-12 08:50:18 948.0 2013-01-12 08:50:18 945.0 2013-01-12 08:50:18 ... 2013-01-12 08:50:18 947.0 2013-01-12 08:50:19 945.0 2013-01-12 08:50:19 946.0 2013-01-12 08:50:19 946.0 2013-01-12 08:50:20 0
我需要计算列数N,其中site列不为NaN。我尝试使用
df[['site%s' % i for i in range(1, 11)]].count(axis=1)
但它针对每个id返回给我10
此外,我已经尝试过
train_df[sites].notnull().count(axis=1)
而且这也没有帮助。
期望输出
21669 2
54843 4
77292 10
114021 10
train_df[sites].notnull().sum(axis=1)
? You only want to sum theTrue
elements in your columns. Alternatively, usetrain_df[sites].count(axis=1)
- cs95