[Tutor] while loops

Kent Johnson kent37 at tds.net
Mon Aug 8 19:56:13 CEST 2005


Will Harris wrote:
> I am working my way through "python programming for the absolute
> beginner" and one of the challenges is to create a program that will
> flip a coin 100 times and tell you how many of each it did. Now I
> have it flipping the coin, but when I try to do this 100 times I end
> up with it running through 100 times, but always the same result
> comes back. It will either be 100 heads, or 100 tails. I have tried
> if statements and while loops and both seem to give me all or
> nothing. I am just looking for a hint at the direction to look of
> adjust to get the code below working not really the solution. Thanks
> in advanced for any tips.

You need to change the value of coin inside the loop. The code you have flips the coin once and reports the result 100 times.

Kent

> 
> #!/usr/bin/python
> import random
> 
> coin = random.randrange(2)
> 
> count = 0
> head_count = 0
> tail_count = 0
> 
> while (count != 100):
>         if coin == 0:
>                 print "You got Heads!"
>                 head_count = head_count + 1
>                 count = count + 1
>         else:
>                 print "You got Tails!"
>                 tail_count = tail_count + 1
>                 count = count + 1
> 
> print "Out of", count, "you flipped", head_count, "heads and ", tail_count, "tails"
> 
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