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

Ferdinand Pretorius
Ferdinand Pretorius
18,705 Points
Posted by Ferdinand Pretorius
Ferdinand Pretorius
18,705 Points

Need help with python challenge (Treehouse is drunk would be more accurate)

Apparently I'm doing something wrong on task 3

When i run my code locally in gnome shell using python 2 and 3 it executes without any problems, gives 5 random numbers and then the while loop becomes falsey and it quits, as expected!

Still when i do the challenge i keep getting the error: Oops! It looks like Task 1 is no longer passing...

Here is the description!

Alright, last step but it's a big one.
Make a while loop that runs until start is falsey.
Inside the loop, use random.randint(1, 99) to get a random number.
If that random number is even (use even_odd to findout), print "{} is even", putting the random number in the hole.
Otherwise, print "{} is odd", again using the random number.
Finally, decrement start by 1.
I know it's a lot, but I know you can do it!

And here is my code!

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:
    rnum = random.randint(1, 99)

    if even_odd(rnum):
        print "{} is even".format(rnum)
    else:
        print "{} is odd".format(rnum)
    start -= 1

2 Answers

tobiaskrause
tobiaskrause
9,160 Points

Not sure what is wrong in your code this worked for me

import random
def even_odd(num):
    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

Python 3 has a new print function...but i am not sure if that was the problem

Ferdinand Pretorius
Ferdinand Pretorius
18,705 Points
Ferdinand Pretorius
Ferdinand Pretorius
18,705 Points

I didn't even think to use the print function, i thought PEP 3105 print statement would still be valid in the test, turns out i was wrong.

Cheers for info, this worked.

Hanifah W
Hanifah W
395 Points
Hanifah W
Hanifah W
395 Points

Why the variable 'start'. Not sure what it does here? Wouldl appreciate any clarity someone can give,

John Judge
John Judge
3,527 Points
John Judge
John Judge
3,527 Points

Hanifah W I believe start is acting as a countdown. It 'starts' at 5, and each time the while loop iterates decrements by 1. Once it hits 0 it becomes falsey and breaks the loop.

Sharon Walls
Sharon Walls
9,234 Points

You need "start" to act as a countdown from 5.