练习代码
people = 30
cars = 40
trucks = 15
if cars > people:
print("We should take the cars.")
elif cars < people:
print("We can't decide.")
if trucks > cars:
print("That's too many trucks.")
elif trucks < cars:
print("Maybe we could take the trucks.")
else:
print("We still can't decide.")
if people > trucks:
print("Alright, let's just take the trucks.")
else:
print("Fine, let's stay home then.")
Study Drills
Try to guess what elif and else are doing.
Change the numbers of cars, people, and trucks, and then trace through each
if-statement to see what will be printed.Try some more complex Boolean expressions like cars > people or trucks < cars.
Above each line write a comment describing what the line does.
