练习4——变量(variable)和命名

代码如下

#coding:utf-8cars = 100space_in_a_car = 4.0drivers = 30passengers = 90cars_not_driven = cars - driverscars_driven = driverscarpool_capacity = cars_driven * space_in_a_caraverage_passengers_per_car = passengers / cars_driven# python3.0修改了print的工作方式，变成了函数调用，需要加上“()”才能正常工作print ('There are', cars, 'cars available.' )print ('There are only', drivers, 'drivers available.')print ('There will be', cars_not_driven, '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.')