1、关于直接赋值
2、关于浅复制copy
（1）实现浅copy的三种方式：
import copy person = ["name",["a",100]] p1 = copy.copy(person) p2 = person[:] p3 = list(person) print(p1) print(p2) print(p3) #运行结果： #['name', ['a', 100]] #['name', ['a', 100]] #['name', ['a', 100]] （2）浅copy的应用：用来创建联合账号（如：夫妻共同存款） #!/usr/bin/env python # -*- coding:utf-8 -*- # Author:ZhengzhengLiu import copy person = ["name",["saving",100]] p1 = copy.copy(person) p2 = copy.copy(person) p1[0] = "Liu" p2[0] = "Mao" p1[1][1] = 50 //当第一个人使联合账户的存款发生修改时，第二个人也能看到 print(p1) print(p2) #运行结果： #['Liu', ['saving', 50]] #['Mao', ['saving', 50]]注：浅copy只复制列表的第一层元素。
3、关于深复制deep copy
4、元组（tuple）
元组与列表差不多，也是存一组数，只是它一旦创建便不能再修改，所以，元组又叫只读列表。 其语法为：采用小括号 names = ("Liu","Zhang","Mao","Song") 元组只有2个方法，count和index。
3、列表结合各种逻辑条件应用——Python3.6-购物车程序练习实例
#!/usr/bin/env python # -*- coding:utf-8 -*- # Author:ZhengzhengLiu Products = [ ('Iphone',5800), ('Mac',12000), ('Bike',800), ('Water',10) ] shopping_list=[] Salary = input("Your Salary:") if Salary.isdigit(): Salary = int(Salary) while True: for index,i in enumerate(Products): print(index,i) user_choice = input("Please input the products number:") if user_choice.isdigit(): user_choice = int(user_choice) if user_choice < len(Products) and user_choice >=0: if Products[user_choice][1] <= Salary: shopping_list.append(Products[user_choice]) Salary -= Products[user_choice][1] print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m"%(Products[user_choice],Salary)) else: print("\033[41;1mYour balance is not enough!\033[0m" %Salary) else: print("Invalid input!") elif user_choice == 'q': print("------------Shopping List----------") for i in shopping_list: print(i) print("Your current balance is:",Salary) exit() else: print("invalid option!") ''' 输出结果为： Your Salary:34500 0 ('Iphone', 5800) 1 ('Mac', 12000) 2 ('Bike', 800) 3 ('Water', 10) Please input the products number:1 Added ('Mac', 12000) into shopping cart,your current balance is 22500 0 ('Iphone', 5800) 1 ('Mac', 12000) 2 ('Bike', 800) 3 ('Water', 10) Please input the products number:2 Added ('Bike', 800) into shopping cart,your current balance is 21700 0 ('Iphone', 5800) 1 ('Mac', 12000) 2 ('Bike', 800) 3 ('Water', 10) Please input the products number:4 Invalid input! 0 ('Iphone', 5800) 1 ('Mac', 12000) 2 ('Bike', 800) 3 ('Water', 10) Please input the products number:3 Added ('Water', 10) into shopping cart,your current balance is 21690 0 ('Iphone', 5800) 1 ('Mac', 12000) 2 ('Bike', 800) 3 ('Water', 10) Please input the products number:q ------------Shopping List---------- ('Mac', 12000) ('Bike', 800) ('Water', 10) Your current balance is: 21690 '''
