Building a formal interface with ABC
Formal interfaces offer a more enforceable contract between an interface and any classes that implement it. You'll practice creating a formal interface made up of two abstract methods, using the abc module. The ABC class and abstractmethod decorator have been imported from abc. Have fun!
Diese Übung ist Teil des Kurses
Intermediate Object-Oriented Programming in Python
Anleitung zur Übung
- Create a formal interface, called
Product. - Define
purchase()as an abstract method with parametersselfandquantity, and add thepasskeyword to the method body. - Define the
update_price()abstract method, which takes parametersselfandnew_price.
Interaktive Übung
Vervollständige den Beispielcode, um diese Übung erfolgreich abzuschließen.
# Create a Product interface
____ ____(____):
# Define a purchase() abstract method
____
def ____(____, quantity):
____
# Create an update_price() abstract method
____
def ____(self, ____):
____