Wrong number of prints...?

Question

why am i getting this eror message

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

Answer 1 · 2017-03-21T17:00:15Z

March 21, 2017 5:00pm

I think you misunderstood the falseness of number zero.

Zero is considered false in a conditional statement, but that doesn't mean it is the same data type as boolean.

Also, any integer except zero is considered truthy by python. So you don't need to invert zero.

not operator must be only used inside a conditional statement or with a variable that stores booleans -- False and True

So this is how your code needs to be re-written:

start = 5
def even_odd(num):
    # Any number but 0, is considered truthy and therefore, odd. No need to invert it
    return num % 2

while start :
    # as long as 'start' is not zero, the loop runs

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

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akshaan Mazumdar

akshaan Mazumdar

Wrong number of prints...?

1 Answer

pooya tolideh

pooya tolideh