On 8/17/06, Danny Yoo <[EMAIL PROTECTED]
> wrote:
>> > Mr. Yoo im working on a program to write a sudoku puzzle and if
>> > something is wrong with the last row i need to re make the whole puzzle
>> > over again.
>> Here's a separate question that's related to the first: can you write a
>> function that asks the user to enter a word, and continues prompting until
>> the user enters a non-empty word?
Hi Amadeo,
> Yes I can Mr. Yoo, but i dont really want to make my whole program a
> loop.
Ok. Why not? I'm curious: is there a particular constraint you're trying
to work under, or is it something else?
Also, I'm not sure what you mean by "whole program".
In any case, here's a way to do it without an explicit 'for' or 'while'
loop:
####################################
def ask_for_input():
msg = raw_input("enter a word:")
if msg:
return msg
else:
return ask_for_input()
####################################
This would not be the idiomatic way to do this in Python only because of a
technical limitation in the main Python implementation (it doesn't support
"tail call optimization").
Still, would this be more acceptable to you, or do you also consider this
a "loop"?
(Personally, I do. *grin*)
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