How do I get the date of the first of last month(python)

July 19, 2022

I am trying to find the first date of the previous one months from now using python.
like this ‘2022-06-01’
Can anyone help me with this please?

>Solution :

Use datetime.date class to construct the first day of a month. Minus 1 day you will get the last day of the last month, then construct it another datetime.date class to get the first day of last month.

>>> import datetime
>>> def first_day_of_month(d):
...   return datetime.date(d.year, d.month, 1)
...
>>> def last_day_of_last_month():
...   return first_day_of_month(datetime.date.today()) - datetime.timedelta(days=1)
...
>>> def first_day_of_last_month():
...   return first_day_of_month(last_day_of_last_month())
...
>>> print(first_day_of_last_month())
2022-06-01