Python Invalid Syntax Errors

Question

I am trying to make a python code for the game of roulette, but every line is returning "invalid syntax". It might be some sort of indentation error, but I am new at Python and can't figure it out for the life of me. Any help would be much appreciated!

import random
def roulette():
 "Game of roulette"
 chips=10
 L=[1,2,3,4,5,6,7,8,9,10]
 while chips > 0:
 x=int(input("You have 10 chips. How many do you want to bet? ")
 while x not in L:
 x=int(input("You bet between 1 and 10 chips. Bet 10 or less chips. ")
 y=input("What do you want to bet on? Green, Red or Black? ")
 z=random.randint(0,10)
 print(z)
 if x == z:
 chips=chips+(9*x)
 print("You have %i chips" %chips)
 elif ((y.lower() == "green" and z == 0) or (y.lower() == "red" and z in [1,3,5,7,9]) or (y.lower() == "black" and z in [2,4,6,8,10])):
 chips=chips+x
 print("You have %i chips" %chips)
 else:
 chips=chips-x
 print("You lost. You now have %i chips" %chips)
 w=input("Do you want to play another round? Yes or No? ")
 if w.lower() == "no" or chips == 0:
 print("The game is over! You had %i chips left" %chips)
 break
roulette()

• Chris: 'every line is returning "invalid syntax"'—every line? What is the exact error message? Please copy and paste it into your question.
• wjandrea: You're missing closing parentheses on the two lines where you set x. I figured this out by running your code through Pylama, a linter. BTW welcome to SO! Please take the tour and read How to Ask. In the future for debugging questions, you need to make a minimal reproducible example including the full error message.
• gelonida: you might consider accepting one of the given answers. If you really think none of the answers helped you, then add a comment and say so
• gelonida: Did any of the answers help? Just asking as you didn't accept any answer.

Answer 1

You missed a closing braces on line 10.

while x not in L:
 x=int(input("You bet between 1 and 10 chips. Bet 10 or less chips. "))

When Python gives you syntax error such as Unexpected Token or Expected ')' but found '}', always look one line above it. There's a great chance you forgot to close some parenthesis.

On a side note, you should consider using proper IDE with syntax checking. Visual Studio Code is a great example.

Answer 2

You missed two closing parenthesises.

In general it is important to post the exact syntax error. Very often it is the line above the syntax error, that as a parenthesis missing or a double quote missing.

As @ivysaur-yw pointed out, things like this are simpler to discover if you use an editor or an IDE with python syntax highlighting

Here the corrected version:

#!/usr/bin/env python
import random
def roulette():
 "Game of roulette"
 chips=10
 L=[1,2,3,4,5,6,7,8,9,10]
 while chips > 0:
 x=int(input("You have 10 chips. How many do you want to bet? ")) # one ) was missing here
 while x not in L:
 x=int(input("You bet between 1 and 10 chips. Bet 10 or less chips. ")) # one ) was missing here
 y=input("What do you want to bet on? Green, Red or Black? ")
 z=random.randint(0,10)
 print(z)
 if x == z:
 chips=chips+(9*x)
 print("You have %i chips" %chips)
 elif ((y.lower() == "green" and z == 0) or (y.lower() == "red" and z in [1,3,5,7,9]) or (y.lower() == "black" and z in [2,4,6,8,10])):
 chips=chips+x
 print("You have %i chips" %chips)
 else:
 chips=chips-x
 print("You lost. You now have %i chips" %chips)
 w=input("Do you want to play another round? Yes or No? ")
 if w.lower() == "no" or chips == 0:
 print("The game is over! You had %i chips left" %chips)
 break
roulette()

With corrected I mean syntactically correct. I did not check the functionality