[Tutor] Breaking out of loop...

[Albert-Jan Roskam]

Hi!

Slightly different (extented) than your original question, but here's how I'd do this (although the program doesn't really do very much): 

import time, random

def is_valid_date():
    while True:
        prompt = 'Enter the date in ISO format (YYYY-MM-DD), or 0 to exit: '
        date = raw_input(prompt)
        try:
            time.strptime(date, "%Y-%m-%d")
            print "You've entered: %s" % date
            return True
        except ValueError:
            if date == str(0):
                print "Finished!"
                break
            else:
                print "Invalid date or invalid date format (%s)" % date
            return False

def do_something():
    for i in range(10):
        print "%05d" % random.randint(0, 10**4)

if is_valid_date():
    do_something()

Cheers!!

Albert-Jan



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In the face of ambiguity, refuse the temptation to guess.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

--- On Fri, 11/20/09, Ken G. <beachkid at insightbb.com> wrote:

From: Ken G. <beachkid at insightbb.com>
Subject: [Tutor] Breaking out of loop...
To: tutor at python.org
Date: Friday, November 20, 2009, 6:02 PM

I am trying to break out of a loop posted below.  When asked for monthdate, it should break out if I entered the number zero and it does not.  GRRR.  Been working on this for almost an hour.

   monthdate = 999

   while monthdate <> 0:
       monthdate = raw_input('Enter the month and date in two digit format each: ')                  month = monthdate[0:2]
       date = monthdate[2:4]
       year = ('2009')
       print month, date, year

   print "Finished!"

Thanking you all in advance for your help.

Ken

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