How do I find the difference in time between yesterday and today in pandas?

Question

I want to find out how much time as passed from last night to today morning. What is the quickest way to do this? The format of the pandas dataframe is shown here. format

Answer 1

You are looking for timedelta. Read this:

https://www.tutorialspoint.com/python_pandas/python_pandas_timedelta.htm

Answer 2

If the datatype is not already datetime, you can use this:

from datetime import datetime
frm = '%H:%M'  #format
delta = datetime.strptime(df['wake_time'][row_number], frm) - datetime.strptime(df['sleep_time'][row_number], frm)

*assuming your pandas dataframe is named df and the row index is row_number