Loop Question

[rurpy at yahoo.com]

On 06/23/2013 05:18 PM, christhecomic at gmail.com wrote:
> How do I bring users back to beginning of user/password question once they
> fail it? thx

This is not a very good question.  There is no context 
so we cannot tell if you are talking about a command line 
program that prompts for a username and password or a 
GUI program with a text box asking for the user/password
or something else.  Nor how exactly you go about doing
the asking.

Some code showing what you are trying to do would help
a lot.

I'll guess you're asking about a simple command line 
program.  Maybe something like the following is what 
you want?

    while True:
        user = input ("User? ").strip()
        pw = input ("Password? ").strip()
        if check_user (user, pw): break
    print ("Hello %s" % user)

check_user() is a function you'll define somewhere that
checks the user and password and returns True if they are
correct and False if not.  

Since you didn't say, I'm also assuming you're using 
Python 3; for Python 2 the code will be a little 
different.	

This is a useful guide to asking questions in a way that
makes it easier for people to answer (and thus help
*you* get better, faster answers):
  http://www.catb.org/esr/faqs/smart-questions.html