Recursive function always returns None

[Erik Max Francis]

Patrick LeGresley wrote:

> I have a sample piece of code for which I can't understand why it
> returns the output it does.  I am running Python 2.3.2 on Redhat
> Linux 8.0 (x86 hardware).  Here is the code and output:
> 
> granada 6% cat tmp.py
> def test(astring):
> 
>         if (len(astring) >= 30):
>                 print 'astring =',astring
>                 return astring
>         else:
>                 astring = astring + astring
>                 test(astring)

The else branch doesn't return anything, it just recursively calls
itself and disposes of the output.  For this last line, you meant:

	return test(astring)

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