遍历列表似乎跳过了一些项目

如何解决遍历列表似乎跳过了一些项目

我想不出更好的方式来描述我的问题，所以我将在这里描述。

#Constants
RED = (255,0)
GREEN = (0,255,0)
BLUE = (0,255)
WHITE = (255,255)
BLACK = (0,0)
GREY = (200,200,200)
GraviTY = 0.001

#Name,position,Mass,Colour,Radius,Zone of influence
#["JupiterMoon",[75,300],5,GREY,2,1],bodyArray = [["EarthMoon",[160,["Jupiter",[50,10,RED,50],["Mars",[200,1,10],["Venus",[300,GREEN,["Earth",[150,BLUE,15],["Sun",[400,100,WHITE,20,800]]
import pygame,math

class Main():

    #Initialise all variables and pygame environment
    def __init__(self):
        pygame.init()
        self.screen = pygame.display.set_mode((800,600))
        self.clock = pygame.time.Clock()
        self.screen.fill(BLACK)
        self.Universe = Universe()
        self.run()

    #Handling events
    def eventhandler(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                self.running = False
                pygame.quit()


    #Painting bodies to the screen
    def run(self):
        self.running = True
        while self.running:
            self.screen.fill(BLACK)
            self.clock.tick(60)
            self.eventhandler()
            pygame.display.update()





            

class Bodies():
    #Initialise bodies
    def __init__(self,name,posXY,mass,colour,radius,zone):
        self.name = name
        self.pos = posXY
        self.mass = mass
        self.colour = colour
        self.radius = radius
        self.zone = zone

    def getdistance(self,centre):
        return math.sqrt((self.pos[0] - centre.pos[0])**2 + (self.pos[1] - centre.pos[1])**2)



class System():
    def __init__(self,centre,orbiting):
        self.centre = centre
        self.orbitingBodies = orbiting

        
class Universe():
    def __init__(self):
        self.systemArray = [[[]]]
        self.bodyArray = []
        self.moonArray = []
        for body in bodyArray:
            B = Bodies(body[0],body[1],body[2],body[3],body[4],body[5])
            self.bodyArray.append(B)
        self.getSystems()

    #Check if the body is 
    def inZoneOfInfluence(self,orbiting,centre):
        if orbiting.getdistance(centre) < centre.zone and orbiting.getdistance(centre) > (orbiting.radius + centre.radius):
            return True
        else:
            return False

        
    #Calls update fuction and draws bodies to screen
    def getSystems(self):
        mutableBodyArray = []
        for item in self.bodyArray:
            mutableBodyArray.append(item)
        for centre in self.bodyArray:
            orbitingArray = []
            orbitingNames = []
            #print("centre name",centre.name)
            #for item in mutableBodyArray:
                #print(item.name)
            print("Names from list")
            for orbiting in mutableBodyArray:
                #print(orbiting.name)
                if self.inZoneOfInfluence(orbiting,centre):
                    orbitingArray.append(orbiting)
                    orbitingNames.append(orbiting.name)
                    #print("Item being removed",orbiting.name)
                    mutableBodyArray.remove(orbiting)
                    #print(orbiting.name,"affected by",centre.name)       
            system = [centre,orbitingArray]
            #systemNames = [centre.name,orbitingNames]
            print("\nRemaining items in list")
            #for item in mutableBodyArray:
                #print(item.name)            
            #print(systemNames)
            #print("\n")
            self.systemArray.append(System(system[0],system[1]))
        

                
m = Main()     

我把所有的代码都复制进去了，有错误的部分是Universe类中的getSystems()函数。应该发生的情况是，如果其中一个物体绕着一个物体旋转，那么它就会从 mutableBodyArray 数组中移除，这样它就不能被放置在另一个中心物体周围。这一直工作到最后一次运行外循环，此时算法正在计算“SUn”周围应该有什么。此时它似乎跳过了 mutableBodyArray 中的“Mars”和“Earth”，即使它应该跳过所有项目。

该函数中所有注释掉的区域都是我试图测试它并弄清楚发生了什么，但除非我遗漏了一些明显的东西，否则我无法弄清楚。由于“地球”和“火星”仍然出现在最后的 mutableBodyArray 中。它们没有被移除，只是似乎被跳过了。

如果我的解释很糟糕，我深表歉意！