列表2—获取元素、删除元素
0 获取元素：>>> member =
>>> member
>>> member
'right'
1 穿插讲授了列表中元素的位置交换
>>> temp = member
>>> member = member
>>> member
['right', 'right', 2, 'wrong', 3.14]
>>> member = 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
>>> del member
>>> 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
['love', 'definitely']
>>> member[:]
['right', 'love', 'definitely']
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