python中的elif是什么意思

people = 30

cars = 40

buses = 15

if cars > people:

  print( "We should take the cars.")

elif cars < people:

  print ("We should not take the cars.")

else:

  print ("We can't dicide.")

if buses > cars:

  print ("That's too many buses.")

elif buses < cars:

  print ("Maybe we could take the buses.")

else:

  print ("We still can't decide.")

if people > buses:

  print ("Alright, let's just take the buses.")

else:

  print ("Fine, let's stay home then.")