python第22篇之--列表操作

#!/usr/bin/pythonprint('Simple Assignment')shoplist = ['apple','mango','carrot','banana']mylist = shoplist   #这里只是把mylist也指向了shoplist列表，程序中现在只有一个列表，mylist相当于别名del shoplist[0]print('shoplist is',shoplist)print('mylist is',mylist)print('Copy by making a full slice')mylist = shoplist[:]  #这是复制操作，程序中此时有两列表，mylist和shoplist各代表一个列表del mylist[0]print('shoplist is',shoplist)print('mylist is',mylist)

结果：

~/Note/python # ./5refrence.py Simple Assignmentshoplist is ['mango', 'carrot', 'banana']mylist is ['mango', 'carrot', 'banana']Copy by making a full sliceshoplist is ['mango', 'carrot', 'banana']mylist is ['carrot', 'banana']