list类型功能剖析

Posted 2020-11-20 zyqy

 append  追加

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

count  计算个数

1 name_list=["eirc","alex","tony"]
2 name_list.append(‘seven‘)
3 name_list.append(‘seven‘)
4 name_list.append(‘seven‘)
5 name_list.append(‘seven‘)
6 print(name_list.count(‘seven‘))
7 
8 #输出结果 4

extent 扩展

# iterable 可迭代的

1 name_list=["eirc","alex","tony"]
2 name_list.append(‘seven‘)
3 name_list.append(‘seven‘)
4 name_list.append(‘seven‘)
5 name_list.append(‘seven‘)
6 print(name_list.count(‘seven‘))
7 temp=[111,222,33,44]
8 name_list.extend(temp)
9 print(name_list)
#输出结果

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