Help, I'm trying to make a calculator but it's not working

Question

user_input1=float(input("")) #defining first Number
operation=(input("")) #multiply, divide, add, subtract
user_input3=float(input("")) #defining second number
if operation==("*"): #if/elif statements to read what operation the user has inputed
a= user_input3 * user_input1
elif operation==("+"):
a=user_input1 + user_input3
elif operation==("-"):
a=user_input1 - user_input3 #if statement is correct it defines a as the operation
elif operation==("÷"):
a=user_input1 // user_input3
print(user_input1,operation,user_input3,"=",a)

For some reason when I divide it says that a isn't defined when it's clearly defined.

Answer 1

try to change the division symbol to slash "/"
It's hard to find "÷" symbol on the phone, and there is no "÷" on the PC keyboard. maybe it's some special symbol and python doesn't recognise it

Update: found what's wrong. run this code and type ÷ when prompted:

a = input('type ÷ : ')
print('inner: ÷')
print('outer:'+a)

and you will see that when you type ÷ symbol as input, it stays the same, but python (maybe only in this app, and maybe everywhere) doesn't seem to know this symbol when printing it, replacing it with double ~. somehow the codes of ÷ is different in this two cases.

Answer 2

Try this simpler alternative of a calculator:

print("Calculator")

x = input("")
xy = input("")
y = input("")

if xy == "+":
print(x+y)
elif xy == "-":
print(x-y)
elif xy == "*":
print(x*y)
elif xy == "/":
print(x/y)
else:
print("SYNTAX ERROR")

Plus, does anyone knows how to output to one line?

Answer 3

is it only when u divide ?
or with every operation

Answer 4

Just dividing, which is weird because it's the same as every other operation.

Answer 5

The idea is if the user input's '÷' then it would define 'a' as dividing the first number by the second number and the next line was printing the outcome. But literally for only dividing it doesn't define a for some reason.

Answer 6

The symbol for dividing is '//' and I've tested it by dividing two numbers with that symbol and it worked. For some reason it doesn't recognize 'a' as a defined function when you can see (on the last elif) it defines 'a' as the division between user_input1 and user_input2.
The idea is if "operation" is inputed as "÷" it then defines 'a' as user_input1 // user_input2 and thus prints it as such. The division symbol itself is irrelevant because it's a string.
The error message says 'a' isn't defined.
Maybe it just doesn't work in mine? Idk.

Try using it on yours maybe and change the "÷" to your division symbol since it may be different from mines and see if it works. As long as it works at all and I'm not being a dummy I'm good lol.

Update: @Dmitriy Silkin, IT WORKED?!? I DON'T UNDERSTAND, HOW DOES CHANGING THE SYMBOL WORK??? THANK YOU SO MUCH
I honestly don't understand though, how does it work? That shouldn't work because of that and if it does then how??? I don't get it lol. Thank you so much, again, this bug has been really bothering me.