PYTHON

get yesterday date python

>>> from datetime import datetime, timedelta
>>> datetime.strftime(datetime.now() - timedelta(1), '%Y-%m-%d')
'2015-05-26'

yesterday in python

from datetime import datetime, timedelta
today = datetime.today()
yesterday = today - timedelta(days=1)
one_week_ago = today - timedelta(days=7)
thirty_days_ago = today - timedelta(days=30)