python: raw_input function back to top again
<p>I have a raw_function looks like:
    number = raw_input('number (empty to finish): ')</p>

<pre><code>if len(number) == 0:
    print
    print
    print 'finished'
    print
    print
    return def()

else:
    pass




while True:
    try:
        column2 = int(raw_input('Enter column: '))
        break
    except ValueError:
        print 'You did not supply an integer. Please try again. '
</code></pre>

<p>When i finish answering my second raw_input, I would like to return to first raw_input.
How can I do this?</p>

<p>Thanks in advance.</p>
