first off here is my code:
def main():
def add(x,y):
return x + y
def subtract(x,y):
return x - y
def multiple(x,y):
return x * y
def divide(x,y):
return x / y
user_choice = int(input("Choose calculation: 1. add 2. subtract 3. divide 4. multiple \n")
dog = int(input("Enter first number: "))
cat = int(input("Enter second number: "))
if user_choice == '1':
print(dog,"+",cat,"=", add(dog,cat))
elif user_choice == '2':
print(dog,"-",cat,"=", subtract(dog,cat))
elif user_choice == '3':
print(dog,"*",cat,"=", multiply(dog,cat))
elif user_choice == '4':
print(dog,"/",cat,"=", divide(dog,cat))
else:
print("Invalid input")
main()
while True:
restart = input("Would you like to restart? (y/n)")
if restart == 'y':
main()
elif restart == 'n':
print('have a nice day!')
break
else:
print("invalid input. Please enter y or n.")
So i built a pretty simple calculator that does addition, multiplication, subtraction, and division. Now, the problem is when I run this exact code I get a syntax error calling out line 20
dog = int(input("Enter first number: "))
^
SyntaxError: invalid syntax
I couldn't figure out why this line was wrong since i looked at another small program i built and it had basically the same line. After fiddling around a bit I managed to fix the program, by removing int() from the user_choice input. I just want to know why exactly this fixed that problem? and is there a different reason that line wasnt working? Thanks for any input!
You are missing a bracket at the end of this line (fixed below):
user_choice = int(input("Choose calculation: 1. add 2. subtract 3. divide 4. multiple \n"))
Also, the multiply
function is misspelled.
Just noticed another one, the if user_choice
checks should be checking for ints not strings if user_choice == 1
not if user_choice == '1'
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.