所以我一直在使用pygame进行我的第一场比赛，我创建了一个创建敌人的函数。关于它们的创建方式，有一些逻辑-必须始终留有一条自由车道，因此敌人的总数不得超过3。有几种随机选择，当随机生成某些值组合时，它会崩溃。

我的功能：

#cretating and manipulating enemies
def enemy_actions(enemies):

    free_lanes = 0
    free_lane_positions = []
    new_enemies_lanes = []



    #going through all lanes
    for i in lanes:
        lane_taken = i[1]   


        if not lane_taken:

            #counting how many free lanes there are
            free_lanes = free_lanes + 1

            #adding free lane position to a list
            free_lane_positions.append(i[0])

    print("Number of free lanes " + str(free_lanes))







    #if atleast 2 lanes are free then we randomly select how many new enemies we will add
    if free_lanes > 1:



        #randomly selecting how many enemies will be added
        number_of_enemies = random.randint(1,len(free_lane_positions) - 1)
        print("Number of enemies " + str(number_of_enemies))


        #repeating action for the number of enemies required
        for i in range(number_of_enemies):

            #randomly selecting lanes for enemies
            lane_x = random.choice(free_lane_positions)


            #adding it to the list of taken lanes
            new_enemies_lanes.append(lane_x)



            #removing taken up lane from list of free lanes
            free_lane_positions.remove(lane_x)

            #marking lane_x as taken in lanes
            for i in lanes:
                if i[0] == lane_x:
                    i.remove(False)
                    i.append(True)

        #(self,place,x,y,length,width,path,speed):
        #building enemy 
        for i in new_enemies_lanes:
            Enemy = enemy(screen,i,enemy_y_start,60,enemy_path,random.randint(3,8))
            enemies.append(Enemy)

当值

Number of free lanes 4
Number of enemies 1
Number of free lanes 3
Number of enemies 1
Number of free lanes 2
Number of enemies 1

游戏可能会在多个周期内生成，并因错误而崩溃：

Traceback (most recent call last):
  File "Pygame.py",line 225,in <module>
    enemy_actions(enemies)
  File "Pygame.py",line 136,in enemy_actions
    Enemy = enemy(screen,8))
TypeError: 'enemy' object is not callable

我不知道这种情况与任何其他组合有何不同。请告诉我是否需要额外的代码。

谢谢！