python笔记二

Posted 2020-10-23

list学习

----------list :append 尾部插入----------

name_list = ["alex","tony","eirc"]
name_list.append(‘seven‘)
name_list.append(‘moon‘)
print(name_list)

----------list :insert 按位置插入----------

name_list = ["alex","tony","eirc"]
name_list.insert(2,‘pepole‘)
print(name_list)

----------list :extend 字符串扩展----------

name_list = ["alex","tony","eirc"]
temp = [11,22,33,44]
name_list.extend(temp)
print(name_list)

----------list :count 元素出现的次数----------

name_list = ["alex","tony","eirc"]
print(name_list.count(‘tony‘))

----------list :index 查找元素索引位置----------

name_list = ["alex","tony","eirc"]
print(name_list.index(‘alex‘))

----------list :pop 在原列表中移除最后一个元素，并将其赋值给别的变量----------

name_list = ["alex","tony","eirc"]
x = name_list.pop()
print(name_list)
print(x)

----------list :remove 移除某个元素----------

name_list = ["alex","tony","eirc"]
name_list.remove(‘alex‘)
print(name_list)

----------list :元素删除,删除指定索引位置----------

name_list = ["alex","tony","eirc"]
del name_list[1:3]
print(name_list)