Question

In ps3, the function "display_hand" (http://dpaste.com/804650/) seems to be returning None, which looks stupid when it interrupts every hand of the word game. Why does this happen, and how can I fix it?

Answer 1

how are you calling it?

Answer 2

The 'display_hand' routine does not say in the specification that it returns anything and it does not, nor does it need to. You simply call it with 'display_hand(hand)' and it iterates through the letters in hand and prints them out for you.

Answer 3

python functions always return something. if you do not tell it what to return, it will return None.

http://pastie.org/4790675

Answer 4

http://docs.python.org/tutorial/controlflow.html#defining-functions

Answer 5

in case it wasn't clear from the previous replies, the display_hand function has no return value specified. Instead, the function itself does the printing. If you run "print display_hand(hand)", it will display the hand as well as print the return value, which is "None" in this case.

If you simply call the function
print "Here is your hand"
display_hand(hand)

you will not have this problem.

Answer 6

Aha! I was printing display_hand. Thank you for the replies! I reworked the function to return the hand instead, like so: http://pastebin.com/wCtDj30R

Answer 7

here is another way to do it - using a list comprehension
http://pastie.org/4816135