Python: reduce precision pandas timestamp dataframe

Question

Hello I have the following dataframe

df = 

       Record_ID       Time
        94704   2014-03-10 07:19:19.647342
        94705   2014-03-10 07:21:44.479363         


        

Answer 1

For pandas of version 0.24.0 or upward, you can simply set the freq parameter in ceil() function to get the precison you want:

df['Time'] = df.Time.dt.ceil(freq='s')  

In [28]: df
Out[28]:
   Record_ID                Time
0      94704 2014-03-10 07:19:19
1      94705 2014-03-10 07:21:44
2      94706 2014-03-10 07:21:45
3      94707 2014-03-10 07:21:54
4      94708 2014-03-10 07:21:55