クローズ

#      class；        def(self)，    class private  
#             ：   class，                ，     ，         ，     （       /    )
CASE:
------------------------------------------------------------    --------------------------------------------------------
origin = [0, 0]  #       
legal_x = [0, 50]  # x        
legal_y = [0, 50]  # y        


def create(pos=origin):
    def player(direction, step):
        #           direction,step    ，  direction     ，step     
        #          x，y            ，          ，      。
        new_x = pos[0] + direction[0] * step
        new_y = pos[1] + direction[1] * step
        pos[0] = new_x
        pos[1] = new_y
        #   ！       pos = [new_x, new_y]，        
        return pos

    return player


player = create()  #     player，     
print player([1, 0], 10)  #  x      10 
print player([0, 1], 20)  #  y      20 
print player([-1, 0], 10)  #  x      10 

################################################################      ########################################
origin = [0, 0]  #       
legal_x = [0, 50]  # x        
legal_y = [0, 50]  # y        


class create():
    def __init__(self,origin):
        self.pos = origin
    def player(self,direction, step):
        #           direction,step    ，  direction     ，step     
        #          x，y            ，          ，      。
        new_x = self.pos[0] + direction[0] * step
        new_y = self.pos[1] + direction[1] * step
        self.pos[0] = new_x
        self.pos[1] = new_y
        #   ！       pos = [new_x, new_y]，        
        print  self.pos

c=create(origin)
c.player([1,0],10)
c.player([0,1],20)
c.player([-1,0],10)
-----------------------------------------------------  ----------------------------------------------------------
def foo():
    a = []
    def bar():
        a.append(100)
        return a
    return bar

if __name__ == "__main__":
    b = foo()
    c = foo()

    print b()
    print b()
    print c()