How to make var. Equal to rest of other two(Python)

Question

hello everyone. i have a little dilema here and i don't find the way to solve it. i wanna make a kind of a "exchange calculator" and i am trying to make a var. equal to the rest of other two, but when i run the program i got an error, saying that you can't rest 'nonetype' with 'nonetype'. i will let the code here and try by yourselves

https://code.sololearn.com/cgUu9c8G9oYl/?ref=app

Answer 1

First of all, Why the hell will you ever write a code like that?
Writing
x= print(input())
will make it equal to nothing. you're basically doing. print(input()).
i suggest doing it like this.
x=input()
print(x)
y=input()
print(y)
and second of all, input is a string. meaning you have to declare it as an integer.
x= int(input()) if you want it to act as an integer instead of a string.
and this is the code you should use:
x=int(input())
print(x)
y=int(input())
print(y)
z=x-y
print(z)

Answer 2

thank you very much for your help! now i have fixed it and it works as i wanted. it is a very easy calculation but i wanted to practice with something easy firstly. this is the code:

product=int(input())
print(product)
mount=int(input())
print(mount)
change=(mount-product)
print(change)
if change==0:
print("correct")
elif change>0:
print(change)
else:
print("denied. need more cash to pay")