How to import a class from another module

Python Help
1

Hi all,

For my python course, I’d like to import the Restaurant class from the module restaurant.py to module three_restaurants.py.

In three_restaurants.py, I want to initialize three instances from the class Restaurant.

How do I import the class? Can I import the class Restaurant?

Now pycharm raises the error

Unused import statement ‘from restaurant import Restaurant’

module three_restuarants
module three_restuarants1920×886 50.5 KB

Here is the code from restaurant.py

# Class restaurant

class Restaurant:
    """"This class describes a restaurant"""

    def __init__(self, restaurant_name, cuisine_type):
        """"Initialize name and age attributes"""
        self.restaurant_name = restaurant_name
        self.cuisine_type = cuisine_type

    def describe_restaurant(self):
        """"Method to describe the restaurant"""
        print("Welcome to " + self.restaurant_name.title() + ", enjoy its " + self.cuisine_type + " cuisine.")

    def open_restaurant(self):
        """"Message to inform the customers that the restaurant is open"""
        print(self.restaurant_name.title() + " is open. Please come in and enjoy your dinner.")


# creating an instance of the restaurant
restaurant = Restaurant('yaff', 'haute')

restaurant.describe_restaurant()
restaurant.open_restaurant()

Thanks in advance

2

In restaurant.py:

class Restaurant:
    ...

In your other file three_restaurants.py:

from restaurants import Restaurant

joes_diner = Restaurant()
moms_kitchen = Restaurant()
golden_lotus_chinese_pizza = Restaurant()

The Pycharm warning (not an error!)

Unused import statement ‘from restaurant import Restaurant’

will go away once you actually use that class Restaurant…

2 Likes
3

Wow, so simple, thanks Steven for the explanation and the example.

Also, good to know that it’s a warning instead of error.

4

I’m also having troubles importing a method from a class out of another module.

I have this module users.py, and I want to import one of the methods show_privileges from the Admin class into module privileges.py (there are two classes in users.py)

Unfortunately, pycharm states: ‘Cannot find reference show_privileges in users.py’

How can I resolve this?

privileges modiule -2
privileges modiule -21920×1010 107 KB

For some reason I can only add one picture in my comment.

Here’s the code that contains the show_privileges method.

class Admin(User):
    """
    This class is based on the class User
    """

    def __init__(self, first_name, last_name, age, gender):
        super().__init__(first_name, last_name, age, gender)
        self.privileges = ["it can add a post", "it can delete a post", "it can ban a user"]

    def show_privileges(self):
        print("An Admin has the following privileges:")
        for privilege in self.privileges:
            print("- " + privilege.capitalize())


admin = Admin('jeffrey', 'jongkees', 37, 'm')
admin.show_privileges()
5

Jeff,

You would have to initialise the Admin class to use your function as it isn’t agnostic and can’t be imported separately.

1 Like
6

Could you explain what you mean by “agnostic” here? This is not a use of the word with which I am familiar.

Do you mean that show_privileges is not a top level name, but rather a method inside Admin, which is a top level name.

Thanks,
Cameron Simpson

1 Like
7

Yes, exactly. That’s what I meant. Thank you for simplifying it.

8

Hi Abdullah,

Thank you very much for explaining. I’m only a beginner, and couldn’t figure it out. Have a great day

9

No problem at all. You can DM me anytime if you need help.

1 Like
10

Great. I will definitely do.

1 Like