how to subtract days from date python code example

Example 1: python today - 1 day

from datetime import datetime, timedelta

yesterday = datetime.today() - timedelta(days = 1 )

Example 2: how to add and subtract days datetime python

a_date = datetime.date(2015, 10, 10)
days = datetime.timedelta(5)

new_date = a_date - days
#Subtract 5 days from a_date


print(new_date)
#OUTPUT
#2015-10-05

Example 3: remove days when subtracting time python

df_test['Difference'] = (df_test['First_Date'] - df_test['Second Date']).dt.days