list类型功能剖析

append  向后追加

 name_list=["eirc","alex","tony"]
 name_list.append('seven')
 print(name_list)
 #输出结果['eirc', 'alex', 'tony', 'seven']

count  计算元素出现次数

 name_list=["eirc","alex","tony"]
 name_list.append('seven')
 name_list.append('seven')
 name_list.append('seven')
 name_list.append('seven')
 print(name_list.count('seven'))

 #输出结果 4

extent 扩展（批量添加）

# iterable 可迭代的

 name_list=["eirc","alex","tony"]
 name_list.append('seven')
 name_list.append('seven')
 name_list.append('seven')
 name_list.append('seven')
 print(name_list.count('seven'))
 temp=[111,222,33,44]
 name_list.extend(temp)
 print(name_list)
#输出结果

　　4
　　['eirc', 'alex', 'tony', 'seven', 'seven', 'seven', 'seven', 111, 222, 33, 44]

index  获取指定元素的索引

1 name_list=["eirc","alex","tony"]
2 name_list.append('seven')
3 print(name_list.index("alex"))
4 #输出结果 1

insert 向指定索引插入元素

 name_list=["eirc","alex","tony"]
 name_list.insert(1,'SEVEN')
 #在索引值为1的位置插入SEVEN
 print(name_list)
 #输出结果['eirc', 'SEVEN', 'alex', 'tony']

pop 在原list中移除列表尾部，并且可以将其赋值给其他变量

 name_list=["eirc","alex","tony"]
 i = name_list.pop()
 print(i)
 print(name_list)
 #输出结果tony
 ['eirc', 'alex']

remove  在list中移除某个元素（从左边找到的第一个元素）

 name_list=["eirc","alex","tony"]
 name_list.remove("tony")
 print(name_list)
 #输出结果
 ['eirc', 'alex']

reverse 将list中的元素翻转

 name_list=["eirc","alex","tony"]
 name_list.reverse()
 print(name_list)
 #输出结果['tony', 'alex', 'eirc']

sort  排序

 name_list=["eirc","alex","tony"]
 name_list.sort()
 print(name_list)
 #输出结果['alex', 'eirc', 'tony']

del 删除指定位置的元素（也可以执行切片删除）

 name_list=["eirc","alex","tony"]
 del name_list[1]
 print(name_list)
 #输出结果['eirc', 'tony']

 name_list=["eirc","alex","tony","seven"]
 del name_list[1:3]
 print(name_list)
 #输出结果['eirc', 'seven']