(Python) why is my output not reversing?

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Hey all,

I'm a student and doing a practice for my exam. I will have to create a program that converts an input into binary.

So far, I got the code working BUT I need my output to be in reverse order.

I used

Python

[::-1]

yet it doesn't seem to be doing it.

Thanks!

What I have tried:

Python

def binary_converter (num):
    while num != 0:
        output = num % 2 #0 or 1
        num = num // 2
        reverse = str(output) #change into string
        print (reverse[::-1], end="") #reverse not working

print ("Enter a number:")
num = int(input())
binary_converter(num)

Posted 10-May-18 22:10pm

Member 13822063

Updated 10-May-18 22:18pm

v2

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Thomas Daniels · Accepted Answer · 2018-05-10T22:20:00

output is always just a one-letter string (because it's inside the loop), so reversing it just gives the same string.

What you need to do, is reversing the whole string before printing it:

Python

def binary_converter(num):
    reverse = ""
    while num != 0:
        output = num % 2 # 0 or 1
        num = num // 2
        reverse += str(output)
    print (reverse[::-1], end="")