python date of the previous month

Question

I am trying to get the date of the previous month with python. Here is what i\'ve tried:

str( time.strftime(\'%Y\') ) + str( int(time.strftime(\'%m\'))-1 )
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Answer 1

def prev_month(date=datetime.datetime.today()):
    if date.month == 1:
        return date.replace(month=12,year=date.year-1)
    else:
        try:
            return date.replace(month=date.month-1)
        except ValueError:
            return prev_month(date=date.replace(day=date.day-1))