Python Date/Datetime Arithmetic Examples: Adding, Subtracting, etc
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Table of Contents
Unless otherwise stated, python v3.6+ is used
For other examples on how to use Python date/datetime objects, see Python Datetime Examples
All code for this post is available here: datetime-arithmetic.ipynb
Add seconds to Datetime
Add timedelta(seconds=N) to your datetime object
from datetime import datetime,timedelta
date_before = datetime.now()
# datetime.datetime(2022, 5, 8, 1, 52, 41, 804450)
date_after = date_before + timedelta(seconds=5)
# datetime.datetime(2022, 5, 8, 1, 52, 46, 804450)
Add days to date
Add timedelta(days=N) to your date object
from datetime import date,timedelta
date_before = date.today()
# datetime.date(2022, 5, 8)
date_after = date_before + timedelta(days=2)
# datetime.date(2022, 5, 10)
Datetime difference in seconds
Adding and subtracting Datetime objects gives you a TimeDelta object as result.
You can call .seconds (also hours, minutes, etc) on the TimeDelta object.
from datetime import datetime, timedelta
date_before = datetime.now()
# added 5 seconds
date_after = date_before + timedelta(seconds=5)
delta = date_after - date_before
# datetime.timedelta(seconds=5)
print(delta.seconds)
# 5