Just like with builtin modules or modules that other’s have build you can import your own groups of classes the same way.

Importing Classes #

Importing a single class #

Always include a docstring at the head of a module you create.

You can import modules just like with any other module.

from car import Car

my_new_car = Car('audi', 'a4', 2019)
print(my_new_car.get_descriptive_name())

my_new_car.odometer_reading = 23
my_new_car.read_odometer()

2019 Audi A4
This car has 23 miles on it.

Storing multiple classes in a module #

You can store as many classes as you like in a module, but they should be related.

You can import multiple classes #

from car import Car, ElectricCar
...

Or you can import the entire module #

import car

my_beetle = car.Car('volkswagen', 'beetle', 2019)
...

Importing all classes from a Module #

Use * syntax:

from module_name import *

This method is discouraged though. It’s better to know what’s imported based on the import statement at the head of the file.

Importing a Module into a Module #

Sometimes modules depend on other modules, so you can just import that module into the other module using the same syntax:

from car import Car

Some classes that depend on car...

Using Aliases #

from electric_car import ElectricCar as EC