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Re: Checking for valid date input and convert appropriately

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The datetime function: strptime() DOES check the date for validity. So try something like:

from datetime import datetime

def get_date():
  while True:
    try:
      date_in = raw_input("Enter date (dd mm yyyy): ")
      date_out = datetime.strptime(date_in,"%d %m %Y").strftime("%Y-%m-%d")
      return date_out
    except ValueError:
      print "Invalid date: {}, try again...".format(date_in)

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Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 11:38 -0800
  Re: Checking for valid date input and convert appropriately MRAB <python@mrabarnett.plus.com> - 2013-02-21 20:14 +0000
    Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 13:22 -0800
      Re: Checking for valid date input and convert appropriately MRAB <python@mrabarnett.plus.com> - 2013-02-21 21:46 +0000
      Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-21 23:03 +0100
        Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:08 -0800
          Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:18 -0800
            Re: Checking for valid date input and convert appropriately Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-02-21 23:30 +0000
          Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:18 -0800
          Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-22 00:37 +0100
            Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 16:12 -0800
              Re: Checking for valid date input and convert appropriately "Michael Ross" <gmx@ross.cx> - 2013-02-22 01:57 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 20:34 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 20:34 -0800
                Re: Checking for valid date input and convert appropriately rob.marshall17@gmail.com - 2013-02-21 22:20 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 02:06 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 02:06 -0800
                Re: Checking for valid date input and convert appropriately rob.marshall17@gmail.com - 2013-02-21 22:20 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:01 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 13:03 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:24 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:28 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:28 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 14:35 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 07:07 -0800
                Re: Checking for valid date input and convert appropriately Lele Gaifax <lele@metapensiero.it> - 2013-02-22 16:25 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:38 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:39 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:39 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 09:38 -0800
                Re: Checking for valid date input and convert appropriately Tim Chase <python.list@tim.thechases.com> - 2013-02-22 10:18 -0600
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 07:07 -0800
                Re: Checking for valid date input and convert appropriately Chris Angelico <rosuav@gmail.com> - 2013-02-23 01:03 +1100
                Re: Checking for valid date input and convert appropriately Andreas Perstinger <andipersti@gmail.com> - 2013-02-22 15:10 +0100
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 05:24 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:01 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:45 -0800
                Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-22 03:45 -0800
            Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 16:12 -0800
        Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 15:08 -0800
    Re: Checking for valid date input and convert appropriately Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-02-21 13:22 -0800

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