python的列表拷贝

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1.拷贝一个列表必须使用切片操作符拷贝看下面的结果,与预想之差异

print (\'Simple Assignment\')
shoplist = [\'apple\',\'mango\',\'carrot\',\'banana\']
mylist = shoplist

del shoplist[0]

print (\' shoplist is \', shoplist)
print (\'mylist is \' ,mylist)

print (\'Copy by making a full slice\')
mylist = shoplist[:]
del mylist [0]

print (\'shoplist is \',shoplist)
print (\'mylist is \',mylist)

 

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