python的列表list

一.添加?

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']

二.insert添加

[root@rhel8 day04]# vim demo03.py
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']

三.extend添加

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.append(['d','e'])
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', ['d', 'e']]  #发现并不是理想结果

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']

?四.删除remove

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
#remove
team.remove('d')  #要加删除的内容
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']
['a', 'c', 'b', 'e']

五.pop()删除

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
#remove
team.remove('d')
print(team)
#pop 删除尾部的元素，并返回删除的元素
print("删除的元素:",team.pop())
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']
['a', 'c', 'b', 'e']
删除的元素: e
['a', 'c', 'b']

六.pop(索引)?

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
#remove
team.remove('d')
print(team)
#pop 删除尾部的元素，并返回删除的元素
print("删除的元素:",team.pop())
print(team)
#pop(索引)
print("删除的元素:",team.pop(2))
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']
['a', 'c', 'b', 'e']
删除的元素: e
['a', 'c', 'b']
删除的元素: b
['a', 'c']

七.del 删除

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
#remove
team.remove('d')
print(team)
#pop 删除尾部的元素，并返回删除的元素
print("删除的元素:",team.pop())
print(team)
#pop(索引)
print("删除的元素:",team.pop(2))
print(team)
#del 删除
del team[0]
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']
['a', 'c', 'b', 'e']
删除的元素: e
['a', 'c', 'b']
删除的元素: b
['a', 'c']
['c']

八.clear清除内容

?

[root@rhel8 day04]# vim demo03.py 
team = ['a']
#添加
team.append('b')
print(team)
#insert 添加
team.insert(1,"c")
print(team)
#extend 添加
team.extend(['d','e'])
print(team)
#remove
team.remove('d')
print(team)
#pop 删除尾部的元素，并返回删除的元素
print("删除的元素:",team.pop())
print(team)
#pop(索引)
print("删除的元素:",team.pop(2))
print(team)
#del 删除
del team[0]
print(team)
#clear
team.clear()
print(team)
[root@rhel8 day04]# python3 demo03.py 
['a', 'b']
['a', 'c', 'b']
['a', 'c', 'b', 'd', 'e']
['a', 'c', 'b', 'e']
删除的元素: e
['a', 'c', 'b']
删除的元素: b
['a', 'c']
['c']
[]