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Python 复制与赋值
用‘b=a’复制，对变量a,b的操作都会对a指向的对象起作用。
用‘b=a[]’赋值，则只是赋值。
#!/usr/bin/env python# -*- coding: utf-8 -*-# Filename:reference.py__author__ = ‘JerryQiu‘print ‘Simple Assignment‘shoplist = [‘apple‘,‘mango‘,‘carrot‘,‘banana‘]mylist = shoplistdel mylist[0]print ‘shoplist is:‘,shoplistprint ‘mylist is:‘,mylistprint ‘Copy by making a full slice‘mylist= shoplist[:]del shoplist[0]print ‘shoplist is:‘,shoplistprint ‘mylist is:‘,mylist
$python reference.pySimple Assignmentshoplist is: [‘mango‘, ‘carrot‘, ‘banana‘]mylist is: [‘mango‘, ‘carrot‘, ‘banana‘]Copy by making a full sliceshoplist is: [‘carrot‘, ‘banana‘]mylist is: [‘mango‘, ‘carrot‘, ‘banana‘]
Python 复制与赋值
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