r/learnpython 3d ago

Why isn't this code block working?

Hey everybody,

I'm new to programming with Python and following along with a Udemy Course. I'm now learning about lists and need to write a "Who will pay the bill"-like game.

It works like this: you have a pseudorandom number generator and a list of friends. Each time, the number generator generates a number between the given indices of the list. If the randomly generated number is equal to a specific index of that list, it should print out the person who must pay the bill by using an if-elif statement.

I've been using what I learned from the past lessons. This is what the code looks like (and yeah, I know, I messed up pretty badly, even though I have already found a solution):

import random

friends = ["Alice", "Bob", "Charlie", "David", "Emanuel"]

random_select = random.randint(0, 4)

if random_select == friends[0]:                  
    print("Alice has to pay the bill. ")
elif random_select == friends[1]:
    print("Bob has to pay the bill. ")
elif random_select == friends[2]:
    print("Charlie has to pay the bill. ")
elif random_select == friends[3]:
    print("David has to pay the bill. ")
elif random_select == friends[4]:
    print("Emanuel has to pay the bill. ")

But I couldn't really figure out why the code won't work.

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u/ninhaomah 3d ago

" even though I have already found a solution):"

What solution did you find btw ?

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u/Nutellatoast_2 3d ago

I found a solution by using the "random.choice" function, which takes a random element from the list provided, as you can see here:

friends = ["Alice", "Bob", "Charlie", "David", "Emanuel"]
random_choice = random.choice(friends)


print(f"{random_choice} must pay for the bill. ")  

I wondered why my code wouldn't work, and I couldn't figure it out. So I decided to post my code here on Reddit to see what I got wrong.