python列表处理

# -*- coding:utf-8 -*-
# @FileName :practise002.py
# @Time     :2022-06-02 9:34
# @Author   :Mr.KGG
"""
   列表删除操作list
   删除
"""
area=["xianggang","shanghai","xinjiang","sichuan","taiwan","shandong","fujian","hebei","guangdong","tianjing"]
#方法一：根据元素删除
area.remove("xianggang")
#area.remove("xiang")可以删在列表内部的，不能删除列表内不存在的内容
print(area)
#方法二：根据定位删除
area=["xianggang","shanghai","xinjiang","sichuan","taiwan","shandong","fujian","hebei","guangdong","tianjing"]
del area[0]#删除第一个元素
print(area)
# del area[:]#删除所有元素，不对数据进行拷贝
area=["xianggang","shanghai","xinjiang","sichuan","taiwan","shandong","fujian","hebei","guangdong","tianjing"]
del area[0:2:1]
print(area)
"""
  练习
"""
plants=["水星","金星","火星","木星"]
plants.insert(2,"地球")
print(plants)
# plants.extend(["土星","天王星","海王星"])#extend()函数后面是列表
# print(plants)
plants2=["土星","天王星","海王星"]
for item in plants2:
    plants.append(item) #append()函数一次只能追加一个函数，区别extend()
print(plants)
print(plants[0])
print(plants[-1])
print(plants[0:2:1])
plants.remove("海王星")
# plants=["水星","金星","火星","木星"]
# del plants[3]
# print(plants)
plants=["水星","金星","火星","木星"]
for i in range(len(plants)-1,-1,-1):
    print(plants[i])