Check validity of datetime?

Question

I would like to create a setter method for a datetime object so that I can customize the replace method. Is this possible?

For example:

datetime = datetime.replace(day = 34)

This throws an error because 34 is not a valid number of days for any month, but what I would like to do is increase the month by 1 and then subtract 28 , 30 , or 31 days.

Answer 1

this doesn't answer your question directly, but if you're just trying to increment the datetime object, you can use timedelta. For example:

from datetime import datetime
from datetime import timedelta

datetime(2011, 1, 1) + timedelta(days=34)

Answer 2

您可以继承datetime并提供自己的replace方法实现。