Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Shreyas Papinwar
Shreyas Papinwar
2,371 Points
Posted by Shreyas Papinwar
Shreyas Papinwar
2,371 Points

why is it not working?

import random

start = 5

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

even.py 
import random

start = 5

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

1 Answer

Evan Trimby
Evan Trimby
5,381 Points
Evan Trimby
Evan Trimby
5,381 Points

Try moving your function above the main loop.

aaronbuckles
aaronbuckles
3,279 Points

Evan is right. You must define a function before calling it.