列表练习
fruit=["apple","banana","lemon"]
newlist=[x if x!="apple" else "orange" for x in fruit]
print(newlist)
print(fruit[1])
fruit.append("orange")
print(fruit)
fruit.insert(2, "kiwi")
print(fruit)
print(fruit[-2])
["orange","banana","lemon"]
banana
["apple","bannana","lemon","orange"]
["apple","bannana","kiwi","lemon","orange"]
lemon
写得不错