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How can I subtract a day from a python date?
I have a set of files that I'm saving by date, year_month_day.txt format. I need to open the previous day's text file for some processing. How do I find the previous day's date in python?
803
You just have to subtract no. of days using 'timedelta' that you want to get back in order to get the date from the past. For example, on subtracting two we will get the date of the day before yesterday.
There are a few ways to do this, but I've gone with the following: last_date = datetime(year, month + 1, 1) + timedelta(days=-1) . This will calculate the first date of the following month, then subtract 1 day from it to get the last date of the current month.
Here you go:
>>> print datetime.date.today()-datetime.timedelta(1)
>>> 2010-06-19
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