What is wrong with my elif statement: invalid syntax?-CodePudding

class Snake(object):

    def __init__(self, size):

        self.size = size

        self.board = []

        self.snake = []

        self.food = []

        self.score = 0

   def move(self, direction):

if direction in "UP, DOWN, LEFT, RIGHT":

    self.board[self.snake[0]][self.snake[1]] = direction

    self.snake = self.snake[1:]   [self.snake[0]]



def eat(self, food):

if food == "right":

    self.score  = 1

elif food == "left":

    self.score -= 1



def checkCollision(self, other):

if self.snake[0] == other.snake[0] and self.snake[1] == other.snake[1]:

    print("Oops, you hit yourself!")

elif self.snake[0] == other.snake[1] and other.snake[0] == self.snake[1]:

    print("Oops, you hit the wall!")

else:

    print("Collision")





if __name__ == "__main__":

    snake = Snake(5)

    print("You are playing as: "   snake.name)

while snake.score >= 0:

    print("You have "   snake.score   " points left.")

    print("moving snake")

    snake.move("left")

    print("Current board:")

    print(snake.board)

    print("Eating food")

    snake.eat("left")

    print("Current board:")

    print(snake.board)

The Problem is with line 37 elif food == "left":

I'm getting a syntax error: invalid syntax and I am not sure how to go about fixing this specific error. I am new to programming in python and this should probably be obvious to someone more experienced I am hoping. For me I can't seem to figure it out.

CodePudding user response：

You have an indentation problem with your code. You can find out more about it here.

CodePudding user response：

Python relies on indentation for its blocks. Multiple of your lines aren't indented properly.

if food == "right":
    self.score  = 1
elif food == "left":
    self.score -= 1

Make sure to indent your code. There are other parts of the code that aren't indented properly such as checkCollision and your if __name__ == "__main__"

CodePudding user response：

You should just add tabulation in elif food == "left" when using il and elif use it in this way (if and elif in the same degree of space)

if condition:
     do something
elif condition:
     do something