def __init__(self):
    super(Maze, self).__init__()
    self.action_space = ['u', 'd', 'l', 'r']
    self.n_actions = len(self.action_space)
    self.title('maze')
    self.geometry('{0}x{1}'.format((MAZE_H * UNIT), (MAZE_H * UNIT)))
    self._build_maze()
def __init__(self):
    super(Maze, self).__init__()
    self.action_space = ['u', 'd', 'l', 'r']
    self.n_actions = len(self.action_space)
    self.title('maze')
    self.geometry('{0}x{1}'.format((MAZE_H * UNIT), (MAZE_H * UNIT)))
    self._build_maze()