python datetime now format yyyy mm dd hh mm ss code example

Example 1: yyyy-mm-dd hh:mm:ss.0 python

now = datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")

Example 2: python date from yy/mm/dd to yy-mm-dd

lastconnection = datetime.strptime("21/12/2008", "%d/%m/%Y").strftime('%Y-%m-%d')