程序代码：

cars = 100
space_in_a_car = 4.0
drivers = 30
passengers = 90
cars_not_drivers = cars - drivers
cars_driven = drivers
carpool_capacity = cars_driven * space_in_a_car #拼车的承载量
average_passengers_per_car = passengers / cars_driven

print("There are", cars, "cars available.")
print("There are only", drivers, "drivers available.")
print("There will be", cars_not_drivers, "empty cars today.")
print("We can transport", carpool_capacity, "people today.")
print("We have", passengers, "to carpool today.")
print("We need to put about",average_passengers_per_car, "in each car.")

输出结果：

There are 100 cars available.
There are only 30 drivers available.
There will be 70 empty cars today.
We can transport 120.0 people today.
We have 90 to carpool today.
We need to put about 3.0 in each car.