Trouble with dividing a multiplies number by two

Question

I've created a variable that adds two numbers together than another which multiplies that number by 2. After these two functions I try to then divide the result of these two functions by two. It will not work. Is it because I did not make the result of the previous function a global variable?

I've tried making it a global var but it doesn't work.

def add(num1,num2):
    return num1 + num2

def multiply():
    mult = add(1,2)*2
    print(mult)

def divide():
    start = multiply() /2
    print(start)

divide()

I expected the result 3 but instead it threw up an error message instead. What did I do wrong?

You are returning anything in multiply function . add `return mult` in multiply function. — shaik moeed, May 29 '19 at 13:47
Generally, you should share the error message instead of expecting people to guess what output you're getting — Sayse, May 29 '19 at 13:47

vurmux · Answer 1 · 2019-05-29T13:54:43.300

2

Your multiply() doesn't return anything so when the divide() starts to work, it tries to divide None to 2 and raises an error. Here is a bit fixed code:

def add(num1,num2):
    return num1 + num2

def multiply():
    mult = add(1,2)*2
    return mult

def divide():
    start = multiply() /2
    return start

print(divide())

It will print:

3.0

But here is deeper problem:

Your multiply and divide functions have no inputs so they are useless and multiply function and divide function. You can rewrite them as:

def add(num1,num2):
    return num1 + num2

def multiply(num1,num2):
    return num1 * num2

def divide(num1,num2):
    return num1 / num2

print(divide(add(1, 3), multiply(2, 5)))

0.4

edited May 29 '19 at 13:54

answered May 29 '19 at 13:49

vurmux

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Please vote for this to be a duplicate. – quamrana May 29 '19 at 13:52
I appreciate the feedback) thank you so much! – zman May 31 '19 at 01:33

Trouble with dividing a multiplies number by two

1 Answers1