python 全栈 day 3 列表元组

 

                                      列表   、     元组 

列表是我们最常用的数据类型之一，通过列表可以对数据实现最方便的存储、修改等操作

 

# -Author - "win"
names = ["zhangyining ","wangmeng ","lixiaoxia","dingjunhui","liuguoliang ","malong ","wanghao "]
print(names )
print(names[0])
print(names[1:4])
print(names[::2])
print(names[:2])
names.append("liangxiaoting")
print(names)
names.insert(1,"lixiaoxu")
print(names)
names[2] = "yaoming"
print(names)
names.append("张兆旭")
print(names)
names.remove("张兆旭")
print(names)
names.copy()




['zhangyining ', 'wangmeng ', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ']
zhangyining 
['wangmeng ', 'lixiaoxia', 'dingjunhui']
['zhangyining ', 'lixiaoxia', 'liuguoliang ', 'wanghao ']
['zhangyining ', 'wangmeng ']
['zhangyining ', 'wangmeng ', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ', 'liangxiaoting']
['zhangyining ', 'lixiaoxu', 'wangmeng ', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ', 'liangxiaoting']
['zhangyining ', 'lixiaoxu', 'yaoming', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ', 'liangxiaoting']
['zhangyining ', 'lixiaoxu', 'yaoming', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ', 'liangxiaoting', '张兆旭']
['zhangyining ', 'lixiaoxu', 'yaoming', 'lixiaoxia', 'dingjunhui', 'liuguoliang ', 'malong ', 'wanghao ', 'liangxiaoting']

 

元组其实跟列表差不多，也是存一组数，只不是它一旦创建，便不能再修改，所以又叫只读列表

names = ("yaoming","sunyue","yijianlian","sunwei","zhufangyu")
print(names)

('yaoming', 'sunyue', 'yijianlian', 'sunwei', 'zhufangyu')



names.count("yaoming")
print(names.count("yaoming"))
names.index("yaoming")
print(names.index("yaoming"))


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