On 26/11/14 09:57, Sunil Tech wrote:
Hi Danny,
Curious to the use the need of using while True in the given example of
ask_for_a_digit().
On Mon, Nov 17, 2014 at 9:57 AM, Danny Yoo <d...@hashcollision.org
<mailto:d...@hashcollision.org>> wrote:
> def ask_for_a_digit():
> while True:
> digit = raw_input("Give me a digit between 0 and 9.")
> if digit not in "0123456789":
> print "You didn't give me a digit. Try again."
> else:
> return int(digit)
The while loop makes it keep on asking until a valid input is
received. Without the while loop it would only ask once and
either return None or a digit.
HTH
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
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