[Tutor] Engarde program was: i++

[Alan Gauld]

> What if the user enters "maybe".

Sorry, I said the except block i meant the else block of
the original posters code.

In both his case and yours the message gets printed.
But as Danny pointed out you need the try/except in
your case because you are indexing a potentially
empty string. The OP didn't have that limitation to
deal with.

Alan G.

>
>
> -----Original Message-----
> From: tutor-bounces+david.heiser=intelliden.com at python.org
> [mailto:tutor-bounces+david.heiser=intelliden.com at python.org] On 
> Behalf
> Of Alan Gauld
> Sent: Thursday, June 07, 2007 1:45 AM
> To: tutor at python.org
> Subject: Re: [Tutor] Engarde program was: i++
>
>
>
> "David Heiser" <David.Heiser at intelliden.com> wrote
>>
>> def is_yes(question):
>>     while True:
>>         try:
>>             s = raw_input(question).lower()[0]
>>             if s == 'y':
>>                 return True
>>             elif s == 'n':
>>                 return False
>>         except:
>>             pass     ## This traps the condition where a user just
>> presses enter
>>         print '\nplease select y, n, yes, or no\n'
>
> What value do you think the pass adds over just having
> the print statement inside the except block? So far as I can
> tell they will both do exactly the same so the pass is
> not needed. Or am I missing something here?
>
> Alan G.
>
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