1 names = ["maqing"," peilin"," xiaoming"," lilei"," hanmeimei"]

>>> names[0]
'maqing'
>>> names[1]
'peilin'
>>> names[-1]
'hanmeimei'
>>> names[-2] #还可以倒着取
'lilei'

1 >> names = ["maqing"," peilin"," xiaoming"," lilei"," hanmeimei"]
2 >>> print(names[1:3])      #取下标1~3之间的数字，不包含3
3 [' peilin', ' xiaoming']
4 >>> print(names[0:3])      #取下标0~3之间的数字，不包含3
5 ['maqing', ' peilin', ' xiaoming']
6 >>> print(names[:3])        #下标起始位为0时候可以不写
7 >>> print(names[-2:])       #表示从后开始取值，最后两个数字
8 [' lilei', ' hanmeimei']        

1 #追加使用append，默认在列表中末尾处添加
2 >>> names = ["maqing"," peilin"," xiaoming"," lilei"," hanmeimei"]
3 >>> names.append("我是新添加的！")
4 >>> print(names)
5 ['maqing', ' peilin', ' xiaoming', ' lilei', ' hanmeimei', '我是新添加的！']

1 #插入使用insert,结构为位置+内容
2 ['maqing', ' peilin', ' xiaoming', ' lilei', ' hanmeimei', '我是新添加的！']
3 >>> names.insert(1,"cajin")
4 >>> print(names)
5 ['maqing', 'cajin', ' peilin', ' xiaoming', ' lilei', ' hanmeimei', '我是新添加的！']

1 #把列表中“xiaoming”修改成“小明”
2 ['maqing', 'cajin', ' peilin', ' xiaoming', ' lilei', ' hanmeimei', '我是新添加的！']
3 >>> names[3] = "小明"
4 >>> print(names)
5 ['maqing', 'cajin', ' peilin', '小明', ' lilei', ' hanmeimei', '我是新添加的！']

1 #方法一 ：直接del names[位置]
2 ['maqing', 'cajin', ' peilin', '小明', ' lilei', ' hanmeimei', '我是新添加的！']
3 >>> del names[1]
4 >>> print(names)
5 ['maqing', ' peilin', '小明', ' lilei', ' hanmeimei', '我是新添加的！']

1 #方法二：直接删除列表中的数据
2 >>> names.remove(" lilei")
3 >>> print(names)
4 ['maqing', ' peilin', '小明', ' hanmeimei', '我是新添加的！']

1 #方法三：使用pop，从最后面开始删除
2 ['maqing', ' peilin', '小明', ' hanmeimei', '我是新添加的！']
3 >>> names.pop()
4 '我是新添加的！'
5 >>> print(names)
6 ['maqing', ' peilin', '小明', ' hanmeimei']

1 #extend合并两个列表
2 ['maqing', ' peilin', '小明', ' hanmeimei']
3 >>> names1 = [1,2,3]
4 >>> names.extend(names1)
5 >>> print(names)
6 ['maqing', ' peilin', '小明', ' hanmeimei', 1, 2, 3]

1 #一般情况下copy
2 ['maqing', ' peilin', '小明', ' hanmeimei', 1, 2, 3]
3 >>> names_copy = names.copy()
4 >>> print(names_copy)
5 ['maqing', ' peilin', '小明', ' hanmeimei', 1, 2, 3]

1 #使用count统计
2 >>> names = ["maqing"," peilin","xiaoming","xiaoming"]
3 >>> names.count("xiaoming")
4 2

1 #列表排序按照 字符》数字》大写》小写 默认排序
2 >>> names = ["maqing","Ppeilin","3xiaoming","#lilei","!hanmeimei"]
3 >>> names.sort()
4 >>> print(names)
5 ['!hanmeimei', '#lilei', '3xiaoming', 'Ppeilin', 'maqing']

1 #使用reverse反转列表顺序
2 ['!hanmeimei', '#lilei', '3xiaoming', 'Ppeilin', 'maqing']
3 >>> names.reverse()
4 >>> print(names)
5 ['maqing', 'Ppeilin', '3xiaoming', '#lilei', '!hanmeimei']

1 ['maqing', 'Ppeilin', '3xiaoming', '#lilei', '#lilei','!hanmeimei']
2 >>> names.index("Ppeilin")
3 1
4 >>> print(names[names.index("#lilei")])
5 #lilei              #只返回查找到的第一个值

1 names = ("maqing","peilin")
2 print(names.count("maqing"))
3 print(names.index("maqing"))