[Tutor] Issue w/ program: Flip a coin and count heads and tails

Bod Soutar bodsda at googlemail.com
Fri May 24 13:07:00 CEST 2013


On 24 May 2013 12:01, Rafael Knuth <rafael.knuth at gmail.com> wrote:
> Hello,
>
> I am writing a program in Python 3.3.0 which flips a coin 10 x times and
> then counts the number of heads and tails. It obviously does something else
> than I intended, and I am wondering what I did wrong:
>
> import random
>
> print ("""
>
> This program flips a coin 10 times.
>
> It then counts the number of heads and tails.
>
> """)
>
> flips = 0
>
> heads = 0
>
> tails = 0
>
> while flips < 10:
>
>     flips = flips + 1
>
>     if random.randint(1,2) == 1:
>
>         heads = heads + 1
>
>         print("We've got " + str(heads) + " heads here."
>
>     if random.randint(1,2) == 2:
>
>         tails = tails + 1
>
>         print("We've got " + str(tails) + " tails here.")
>
> This is what I get as output:
>
> This program flips a coin 10 times.
>
> It then counts the number of heads and tails.
>
> We've got 1 tails here.
>
> We've got 1 heads here.
>
> We've got 2 tails here.
>
> We've got 2 heads here.
>
> We've got 3 tails here.
>
> We've got 3 heads here.
>
> We've got 4 tails here.
>
> We've got 5 tails here.
>
> We've got 4 heads here.
>
> We've got 6 tails here.
>
> We've got 7 tails here.
>
> We've got 5 heads here.
>
> Can anyone help?
>
> Thank you so much!
>
> All the best,
>
>
>
> Rafael
>
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Hint: Look at your second if statement

Bodsda


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