Python二维数组赋值问题

xiaofengeee 2010-03-07 01:44:17

RowNum=18
ColumnNum=10
SquareList=[[0 for a in range(ColumnNum)] for b in range(RowNum)]
ActiveList=[[0 for a in range(ColumnNum)] for b in range(RowNum)]

ActiveList[0][5]=1
SquareList[0][5]=1
结果是:
ActiveList不正常:
[[0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 1, 0, 0, 0, 0]]
SquareList正常:
[[0, 0, 0, 0, 0, 1, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]

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angel_su 2010-03-07

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其实python的=号，不是赋值而是绑定的意思，对于不可改的整型或字串，用起来就像是赋值的味道，但对于可改的序列就会有如上问题...

AKara 2010-03-07

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>> for i in range(RowNum):
>> ActiveList[i]=ZeroList

ActiveList中每个下标引用到的是同一个 ZeroList 对象，当然改一个就影响所有下标了。

xiaofengeee 2010-03-07

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找到原因了，但是不知道怎么回事



#这样清零后再赋值就有问题

for i in range(RowNum):

    ActiveList[i]=ZeroList

ActiveList[0][5]=1

#结果：

"""

[[0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 1, 0, 0, 0, 0]]

"""





#只有这样才可以

for i in range(RowNum):

    for j in range(ColumnNum):

        ActiveList[i][j]=0

ActiveList[0][5]=1

#结果：

"""

[[0, 0, 0, 0, 0, 1, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0],

 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]

"""

谁知道怎么回事啊？

xiaofengeee 2010-03-07

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贴上全部代码，刚开始学python，写俄罗斯方块



# -*- coding: utf-8 -*-

import pygame

import sys

import random

import time



#游戏框行列数

RowNum=18

ColumnNum=10

GridSize=20

#整个窗口大小

ScreenWidth=(ColumnNum+4)*GridSize+20

ScreenHeight=RowNum*GridSize

#游戏,提示窗口大小，位置,背景

LeftBox=pygame.Rect(0,0,GridSize*ColumnNum,GridSize*RowNum)

LeftbgColor=(255,255,0)

LeftfgColor=(255,0,0)

NextBox=pygame.Rect(GridSize*ColumnNum+10,10,GridSize*4,GridSize*4)

NextbgColor=(0,0,0)

#方块存储

SquareList=[[0 for a in range(ColumnNum)] for b in range(RowNum)]

ActiveList=[[0 for a in range(ColumnNum)] for b in range(RowNum)]

CheckList=[1 for a in range(ColumnNum)]

ZeroList=[0 for a in range(ColumnNum)]

print CheckList,'\n',ZeroList

TimeSleep=0.5

class Game():

    def __init__(self):

        #主窗口，标题

        self.screen=pygame.display.set_mode((ScreenWidth,ScreenHeight))

        pygame.display.set_caption('俄罗斯方块(pygame版)')

        self.background=pygame.Surface(self.screen.get_size()).convert()

    #主循环

    def mainloop(self):

        #背景

        self.screen.fill((255,255,255))

        #画主游戏框

        pygame.draw.rect(self.screen,LeftbgColor,LeftBox)

        #画下一个游戏框

        pygame.draw.rect(self.screen,NextbgColor,NextBox)

        pygame.display.flip()

        self.GameMoveable=True

        self.RndFirst()

        self.DisplayGame()

        #判断循环退出

        isRunning=True

        while isRunning:

            for event in pygame.event.get():

                if event.type==pygame.QUIT:

                    isRunning=False

                if event.type==pygame.KEYDOWN and event.key==pygame.K_ESCAPE:

                    isRunning=False

                if event.type==pygame.KEYDOWN and event.key==pygame.K_UP:

                    self.Up()

                if event.type==pygame.KEYDOWN and event.key==pygame.K_DOWN:

                    self.Down()

                if event.type==pygame.KEYDOWN and event.key==pygame.K_LEFT:

                    self.Left()

                if event.type==pygame.KEYDOWN and event.key==pygame.K_RIGHT:

                    self.Right()

            time.sleep(TimeSleep)

            self.Down()

        #退出循环

        pygame.quit()

    #显示

    def DisplayGame(self):

        pygame.draw.rect(self.screen,LeftbgColor,LeftBox)

        pygame.display.flip()

        for i in range(RowNum):

            for j in range(ColumnNum):

                if SquareList[i][j]==1:

                    pygame.draw.rect(self.screen,LeftfgColor,(j*GridSize,i*GridSize,GridSize-2,GridSize-2))

                    pygame.display.flip()

    #检查消行

    def CheckFull(self):

        for i in range(RowNum):

            if SquareList[i]==CheckList:

                for j in range(i,0,-1):

                    SquareList[j]=SquareList[j-1]

                SquareList[0]=ZeroList

                self.DisplayGame()

    #变形

    def Up(self):

        #print 'Up'

        pass

    #下落

    def Down(self):

        Moveable=True

        for i in range(RowNum-2,-1,-1):

            for j in range(ColumnNum):

                if ActiveList[i][j]==1 and ActiveList[i+1][j]==0 and SquareList[i+1][j]==1:

                    Moveable=False

        if self.GameMoveable:

            for i in range(RowNum-2,-1,-1):

                for j in range(ColumnNum):

                    if ActiveList[i][j]==1:

                        ActiveList[i+1][j]=ActiveList[i][j]

                        ActiveList[i][j]=0

                        SquareList[i+1][j]=SquareList[i][j]

                        SquareList[i][j]=0

            self.DisplayGame()

            print 'True\nSquareList\n',SquareList,'\nActiveList\n',ActiveList

        for j in range(ColumnNum):

            if ActiveList[RowNum-1][j]==1:

                Moveable=False

        if Moveable==False:

            for i in range(RowNum):

                ActiveList[i]=ZeroList

            print 'ZeroActiveList\n',ActiveList

            self.CheckFull()

            self.RndFirst()

            self.DisplayGame()

            print 'False\nSquareList\n',SquareList,'\nActiveList\n',ActiveList

    #左移

    def Left(self):

        Moveable=True

        for i in range(RowNum):

            for j in range(1,ColumnNum):

                if ActiveList[i][j]==1 and ActiveList[i][j-1]==0 and SquareList[i][j-1]==1:

                    Moveable=False

        for i in range(RowNum):

            if ActiveList[i][0]==1:

                Moveable=False

        if Moveable:

            for i in range(RowNum):

                for j in range(1,ColumnNum):

                    if ActiveList[i][j]==1:

                        ActiveList[i][j-1]=ActiveList[i][j]

                        ActiveList[i][j]=0

                        SquareList[i][j-1]=SquareList[i][j]

                        SquareList[i][j]=0

            self.DisplayGame()         

    #右移

    def Right(self):

        Moveable=True

        for i in range(RowNum):

            for j in range(ColumnNum-2,-1,-1):

                if ActiveList[i][j]==1 and ActiveList[i][j+1]==0 and SquareList[i][j+1]==1:

                    Moveable=False

        for i in range(RowNum):

            if ActiveList[i][ColumnNum-1]==1:

                Moveable=False

        if Moveable:

            for i in range(RowNum):

                for j in range(ColumnNum-2,-1,-1):

                    if ActiveList[i][j]==1:

                        ActiveList[i][j+1]=ActiveList[i][j]

                        ActiveList[i][j]=0

                        SquareList[i][j+1]=SquareList[i][j]

                        SquareList[i][j]=0

            self.DisplayGame()

    def RndFirst(self):

        print 'Rnd'

        self.DisplayGame()

        self.SetActive(0,5)

        

    def SetActive(self,i,j):

        print 'SetActive\n',ActiveList

        ActiveList[i][j]=1#不正常

        print SquareList,'\n',ActiveList

        SquareList[i][j]=1#正常

        print 'SetActive OK\n',ActiveList,'\nSquare\n',SquareList

    def SetSqure(self,i,j):

        pass

def main():

    g=Game()

    g.mainloop()

    

if __name__=='__main__':

    main()