list综合练习
熟悉list的切片,插入,末尾添加等功能
"""
八大行星:
1. 创建列表存储行星:
"金星","地球","火星","木星","土星","天王星"
2. 在第一个位置插入 "水星"
3. 在末尾追加"海王星"
4. 打印从太阳到地球之间的行星(前两个行星)
5. 打印地球以后的行星(一行一个)
6. 倒序打印所有行星
"""
list_planets = ["金星","地球","火星","木星","土星","天王星"]
list_planets.insert(0,"水星")
list_planets.append("海王星")
print(list_planets[:2])
for i in range(3,len(list_planents)):
print(list_planents[i])
for i in range (len(list_planents)-1,-1,-1)
print(list_planents[i])