Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Coding Lab 6
Coding Lab 6
2,170 Points

communication error

program stopped python basic

even.py 
import random

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
start=5
while start:
    num=random.randint(1,99)
    if even_odd(num):
        print("{} is even.".format(num))
    else:  
        print("{} is odd.".format(num))

start-=1

2 Answers

Rick Buffington
Rick Buffington
8,146 Points
Rick Buffington
Rick Buffington
8,146 Points

Not totally sure what your problem is - all I see is code. But I can tell from this code it is an infinite loop that will never end. Your indentation is off. You need to indent your start-=1 so that it is considered part of the while loop.

import random

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

start=5

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

  start-=1
Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

:point_right: First, check your indentation.

Make sure that the line that decrements start is inside the loop (otherwise the loop is infinite and crashes the "check work" function).

Then, make sure what you're printing is what the challenge asked for (the challenge strings have no periods).