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Python Python Basics (2015) Letter Game App Even or Odd Loop

Dhruv Patel
Dhruv Patel
8,287 Points

Wrong number of prints?

For some reason it gives me the error of wrong number of prints, but i feel like my code runs fine. Have a made a mistake somehow?

even.py
import random

start = 5

def even_odd(num):
    # If % 2 is 0, the number is even.
    # Since 0 is falsey, we have to invert it with not.
    return not num % 2

while start:
  rand = random.randint(1, 99)
  if even_odd(rand):
    print("{} is even".format(rand))
  else:
    print("{} is odd".format(rand))
    start -= 1

1 Answer

Nathan Tallack
Nathan Tallack
22,159 Points

You need your while loop to stop. So declare it like this.

while start != 0:

That way when your start variable increments down to zero your while loop will finish. :)

Dhruv Patel
Dhruv Patel
8,287 Points

Sorry I already tried that out but the error still exists. Thanks for the response though.

Nathan Tallack
Nathan Tallack
22,159 Points

Ah, just noticed.

Your decrement is within your else clause. That means it is not decrementing with even numbers. ;)

Bring it outside of that and it works. :D

while start != 0:
    rand = random.randint(1, 99)
    if even_odd(rand):
        print("{} is even".format(rand))
    else:
        print("{} is odd".format(rand))
    start -= 1  # this needs to be outside the else clause.