How to add seconds on a datetime value in Python?

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I tried modifying the second property, but didn’t work.

Basically I wanna do: += 3

Have you checked out timedeltas?

from datetime import datetime, timedelta
x = + timedelta(seconds=3)
x += timedelta(seconds=3)

You cannot add seconds to a datetime object. From the docs:

A DateTime object should be considered immutable; all conversion and numeric operations return a new DateTime object rather than modify the current object.

You must create another datetime object, or use the product of the existing object and a timedelta.

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