Syntax error in basic calculator need help

Question

Hello guys I'am having a syntax error on my calculator on elif line can you tell me where i am wrong.
while True:
print("Options")
print("Enter'add' to add two numbers")
print("Enter'subtract' to subtract two number")
print("Enter 'multiply' to multiplty to multiplty two numbers")
print("Enter 'divide' to divide two numbers")
print("Enter 'quit' to end the program")
user_input = input(":")

if user_input =='quit':
break
elif user_input == 'add':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1+num2)
print("The answer is"+ result)
elif user_input =='subtract':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1-num2)
print("The answer is + result")

elif user_input =='multiply':
num1 =float(input("Enter a number."))
num2 =float(input("Enter another number."))
result = str(num1 * num2)
print("The answer is + result")

elif user_input =='divide':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1 / num2)
print("The answer is + result")

else :
print("Unknown input")

Answer 1

P.S. Here is a calculator in one line :)

print(eval(input("Enter math expression to evaluate.\n")))

https://code.sololearn.com/cx1TgWN410RL

Answer 2

I pasted your code into Pycharm and found out some of your indents seem to be tabs and others use spaces. Here it is with the tabs changed to spaces and the minor print problem fixed (see notes at the end)

while True:
print("Options")
print("Enter'add' to add two numbers")
print("Enter'subtract' to subtract two number")
print("Enter 'multiply' to multiplty to multiplty two numbers")
print("Enter 'divide' to divide two numbers")
print("Enter 'quit' to end the program")
user_input = input(":")

if user_input =='quit':
break
elif user_input == 'add':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1+num2)
print("The answer is "+ result)
elif user_input =='subtract':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1-num2)
print("The answer is "+ result)

elif user_input =='multiply':
num1 =float(input("Enter a number."))
num2 =float(input("Enter another number."))
result = str(num1 * num2)
print("The answer is "+ result)

elif user_input =='divide':
num1 = float(input("Enter a number."))
num2 = float(input("Enter another number."))
result = str(num1 / num2)
print("The answer is "+ result)

else :
print("Unknown input")

'''
1. Convert all tabs to spaces, 4 spaces for each indent level.
2. print("The answer is + result") should be print("The answer is " + result)
3. correct typos (multiplty to multiply)
4. suggestion: since it is a hassle to type "multiply", you could just ask the user
to enter 'a', 's', 'm', 'd' instead of the full words.
'''

Answer 3

First and formost, Python uses "elif" instead of "else if". Other than that, it might be something more hidden.

Answer 4

Which line is the error on?

Answer 5

I tried it with first elif than tried else if but as if I recall right else if and elif basicly does the same thing.

Answer 6

It was 12 when I open the thread but now it's the 23 after a few tweaking but still I can't see what did I wrong :S

Answer 7

I actually did that found the missing Sob but still

Answer 8

you don't close the quotes printing variables
you should do this
print("the answer is "+result)

Answer 9

I fixed it too but soloLearn still show to you guys my first code not the editing version

Answer 10

Yes exactly

Answer 11

maybe the erro would be caused by the indented row of return, sometime its caused if is used many spaces instead the tab key, look for other rows too, not only return row. i wish you good coding.