求助！python int类型20200101转时间类型

import pandas as pd
import numpy as np
dic={'id':['a','b','c','d'],
     'time1':[20200101,20200102,20200103,20200104],
     'time2':['20200101','20200102','20200103','20200104']
     }
df=pd.DataFrame(dic)
print(df)

  id     time1     time2
0  a  20200101  20200101
1  b  20200102  20200102
2  c  20200103  20200103
3  d  20200104  20200104
<class 'pandas.core.frame.DataFrame'>

将time1 time2 转化成时间类型2020-01-01

使用pd.to_datetime()就可以实现。很简单的。具体方法看下图