Python Basics: Even or Odd Loop

Question

Hey im doing the "Even or Odd Loop Quiz" in "Python Basics". I keep receiving errors. Does anyone know what i did wrong? Task:

Make a while loop that runs until start is falsey. Inside the loop, use random.randint(1, 99) to get a random number between 1 and 99. If that random number is even (use even_odd to find out), print "{} is even", putting the random number in the hole. Otherwise, print "{} is odd", again using the random number. Finally, decrement start by 1.

My Code:

import random

start=5

def even_odd(num):

return not num % 2

while start == True:

var=random.randint(1,99)

if even_odd(var)==True:

    print("{} is even".format(var))

else:

    print("{} is odd".format(var))

start-=1

Answer 1 · 2017-02-26T19:40:22Z

February 26, 2017 7:40pm

Tristan Masoud - i think it is for converting from int to boolean but that is different than comparing equal to true. so 5==true is false, but if you set start to 5, then had an if statement say - if start: (body) - then that would evaluate to true and the body would execute. if start were 1, then that would equal true - 1 is the return of an integer cast of true - int(true) would return 1. so another way to fix your code would be to cast start as a boolean with bool(start)==True. a bool cast of any non-zero integer returns true, and true==true, so the loop starts executing, start is decremented each time, and when start is 0, bool(0) is false, and the loop exits.

Answer 2 · 2017-02-26T19:13:47Z

February 26, 2017 7:13pm

in your while loop you are comparing an integer variable, start, to a boolean. change to an integer, like while start > 4, and the loop will execute.

Answer 3 · 2017-02-26T19:18:38Z

February 26, 2017 7:18pm

Thank you! But i thought that the integer 5 would be considered as True? So why cant i do it like that?

Answer 4 · 2017-02-26T19:45:28Z

February 26, 2017 7:45pm

ahh i see! Thank you very much for your help! :)

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Tristan Masoud

Tristan Masoud

Python Basics: Even or Odd Loop

4 Answers

james south

james south

james south

james south

Tristan Masoud

Tristan Masoud

Tristan Masoud

Tristan Masoud