list类型常用功能

 

name = "alex"

age = 18

name_list = ["eirc","alex","tony"]
# 索引
print(name_list[0])
print(name_list[0:2])
print(name_list[2:len(name_list)])

for i in name_list:
print(i)

# 向后添加
name_list.append("seven")
name_list.append("seven")
# 按字符查找有几个 元素出现的次数
print(name_list)
print(name_list.count("seven"))

# 批量添加
temp = [111,222,333,444]
name_list.extend(temp)
print(name_list)

# 获取某个元素的索引
print(name_list.index("alex"))

# 在指定个索引的位置插入
name_list.insert(1,"SB")
print(name_list)

# 移除最后一个元素 赋值给另外一个
a1 = name_list.pop()
print(name_list)
print(a1)

# 移除某个元素
name_list.remove("seven")
print(name_list)

# 删除指定元素 根据索引删除
print(name_list)
del name_list[1]
del name_list[1:3]
print(name_list)

# 反转
name_list.reverse()
print(name_list)

#排序 跟算法一起学
# name_list.sort()
# print(name_list)