If statment running a function

I am coding a simple maze game. The maze pattern is inside a .txt file. I read it in python and create two lists in python. One with the coordonate of the walls, the other with the available paths.

I've create a Player class with a move method. But whenever I want to check if the move is in the available paths list, it does run the move method and changes my character position.

from classes import *

maze = Maze ('maze.txt')
maze.create_maze()
mac = Player('mac',[2,2])

keep_playing = True

while keep_playing:
    print (mac.position)
    direction = input("Where are you heading to?")
    if mac.move(direction) in maze.paths:
        print ('ok')
    else: print('No way!')

class Maze :

    def __init__ (self, level):
        self.level = level
        self.walls = []
        self.paths = []
        self.choices = []

    def create_maze (self):
        with open (self.level) as f:
            for y, line in enumerate (f,1):
                for x, c in enumerate (line,1):
                    if c == 'x':
                        self.walls.append([x,y])
                    elif c == '0':
                        self.paths.append([x,y])
            return self.walls, self.paths

class Player :

    def __init__ (self,name, position):
        self.name = name
        self.position = position

    def move (self, direction):
        if direction == "right":
            self.position [0] += 1
            return self.position
        elif direction == "left":
            self.position [0] -= 1
            return self.position
        elif direction == "up":
            self.position [1] -= 1
            return self.position
        elif direction == "down":
            self.position [1] += 1
            return self.position