Datetime Milliseconds To Seconds In Pandas

Have a datetime column in pandas dataframe with values like these: time 2018-04-11 22:18:30.122 2018-04-11 23:00:21.399 I'm wondering how can I round these values, get rid of mill

Solution 1:

Use floor with T for minutes for set 0 seconds:

#if necessary#df['time'] = pd.to_datetime(df['time'])
df['time'] = df['time'].dt.floor('T')
#alternative solution#df['time'] = df['time'].dt.floor('Min')

print (df)
                 time
0 2018-04-11 22:18:00
1 2018-04-11 23:00:00

I want round values time after 30sec is changed to next one:

df['time'] = df['time'].dt.round('T')
print (df)
                 time
0 2018-04-11 22:19:00
1 2018-04-11 23:00:00

Solution 2:

well, ceil is also work for this question.

df['time'] = pd.to_datetime(df['time'])
df['time'] = df['time'].dt.ceil('T')
df
                 time
0 2018-04-11 22:19:00
1 2018-04-11 23:01:00