How to Convert String, DateTime Or TimeStamp to Time in Pandas   

In this article we will see how to extract time only from string or datetime in Pandas.

First, we'll create an example DataFrame to test it. Next, we'll explain several examples in more detail.

(1) extract time with .dt.time - datetime.time

df['date'].dt.time

(2) get time by .dt.strftime('%H:%M') as string

df['date'].dt.strftime('%H:%M')

Setup

Let's work with the following DataFrame which has date and time information stored as a string:

import pandas as pd
dict = {'date': {0: '28-01-2022  5:25:00 PM',
  1: '27-02-2022  6:25:00 PM',
  2: '30-03-2022  7:25:00 PM',
  3: '29-04-2022  8:25:00 PM',
  4: '31-05-2022  9:25:00 PM'},
 'date_short': {0: 'Jan-2022', 1: 'Feb-2022', 2: 'Mar-2022', 3: 'Apr-2022', 4: 'May-2022'}}

df = pd.DataFrame(dict)

DataFrame looks like:

String to datetime

Convert string to datetime with Pandas:

df['date'] = pd.to_datetime(df['date'])

Extract time with .dt.time as datetime.time

Once we have datetime in Pandas we can extract time very easily by using: .dt.time.

Default format of extraction is: HH:MM:SS. It returns a numpy array of datetime.time objects.

df['date'].dt.time

will give us:

0    17:25:00
1    18:25:00
2    19:25:00
3    20:25:00
4    21:25:00
Name: date, dtype: object

Get time by .dt.strftime('%H:%M') as string

For custom format we can use - .dt.strftime('%H:%M').

strftime returns strings formatted in time format given as parameter

df['date'].dt.strftime('%H:%M')

will give us:

0    17:25
1    18:25
2    19:25
3    20:25
4    21:25
Name: date, dtype: object

We can find more information on this link: pandas.Series.dt.strftime

Conclusion

To summarize we saw how to extract time with Pandas in two ways. First by using .dt.time as datetime.

Second one extracts time as a string in any format needed.