Member Avatar for barrelr0ll

Hey there, so I recently joined an online course, and the first mini-project is to create rock, paper, scissors, lizard, spock.

upon testing my program it seems I've got an error in my code and I can't for the life of me figure it out, I was hoping you guys could help me fix it.

I get this error unsupported operand type(s) for Sub: 'number' and 'NoneType'
for this line victor = (c_num - p_num) % 5

The issue seems to be with p_num, but I can't figure it out, if it helps, here is all the stuff to do with p_num

p_num = name_to_number(guess)

def name_to_number(guess):

if guess == "rock":
    p_num = 0

elif guess == "spock":
    p_num = 1

elif guess == "paper":
    p_num = 2

elif guess == "lizard":
    p_num = 3

elif guess == "scissors":
    p_num = 4`
Edited by barrelr0ll
  • 3 Contributors
  • 4 Replies
  • 92 Views
  • 2 Hours Discussion Span
  • Latest Post Latest Post by barrelr0ll
Member Avatar for Gribouillis

Add return p_num at the end of the function. Your function currently returns None. The p_num inside the function is not the same as the p_num outside the function (because it appears in the left part of assignment statements). It is a local variable. You need a return statement to catch its value.

Edited by Gribouillis
Member Avatar for barrelr0ll

Thanks Grib, though that didn't seem to change anything :(
I guess I'll try to wrack my braina bit more, I don't want to bother you guys with the entire 60ish lines of code, I've noticed people here get annoyed at that lol

Member Avatar for Schol-R-LEA

Well, it's not so much that (especially since 60 lines isn't all that much) as it is the tendency of newcomers to simply post their code without actually asking a question about it.

In this case, we'd also need to see where you are setting c_num, as well.

Edited by Schol-R-LEA
Member Avatar for barrelr0ll

Thank you so much for showing interest in helping me, but I just managed to fix it myself, I'm not entirel sure how, but I just took apart the code, reconstructed in in a new file while making slight improvements to the code.

Once again, thanks anyway!

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.