列表2—获取元素、删除元素

wgz890813

0 获取元素：
>>> member = [1,'right',2,'wrong',3.14]
>>> member
[1, 'right', 2, 'wrong', 3.14]
>>> member[1]
'right'
1 穿插讲授了列表中元素的位置交换
>>> temp = member[0]
>>> member[0] = member[1]
>>> member
['right', 'right', 2, 'wrong', 3.14]
>>> member[1] = temp
>>> member
['right', 1, 2, 'wrong', 3.14]
2 删除元素：
   a remove()
>>> member.remove('wrong')
>>> member
['right', 1, 2, 3.14]
   b del 语句使用 del列表名[index]
>>> del member[1]
>>> member
['right', 2, 3.14]
   C pop() 取出最后一个元素并返回给你（可以用来赋值）
>>> member
['right', 2, 3.14]
>>> member.pop()
3.14
>>> temp = member.pop()
>>> temp
2
>>> member.extend(['love','that\'s a shame','definitely'])
>>> member
['right', 'love', "that's a shame", 'definitely']
>>> member.pop(2)
"that's a shame"

3 列表分片
>>> member[1:]
['love', 'definitely']
>>> member[:]
['right', 'love', 'definitely']