![]() An instance of this class contains the time, which is stored in the attributes self.hours, self.minutes and conds. ![]() The class Clock simulates the tick-tack of a clock. CalendarClock inherits both from "Clock" and "Calendar". After this, we will introduce a class "CalendarClock", which is, as the name implies, a combination of "Clock" and "Calendar". For this purpose, we will implement to independent classes: a "Clock" and a "Calendar" class. We want to introduce the principles of multiple inheritance with an example. What we get is an inheritance tree.Įnjoying this page? We offer live Python training courses covering the content of this site. ![]() can inherit from other superclasses as well. It's clear that all the superclasses BaseClass1, BaseClass2, BaseClass3. Python has a sophisticated and well-designed approach to multiple inheritance.Ī class definition, where a child class SubClassName inherits from the parent classes BaseClass1, BaseClass2, BaseClass3, and so on, looks like this:Ĭlass SubclassName(BaseClass1, BaseClass2, BaseClass3. Java doesn't even support multiple inheritance, while C++ supports it. The widespread prejudice that multiple inheritance is something "dangerous" or "bad" is mostly nourished by programming languages with poorly implemented multiple inheritance mechanisms and above all by improper usage of it. ![]() We will address this problem later in this chapter. The critics point out that multiple inheritance comes along with a high level of complexity and ambiguity in situations such as the diamond problem. Multiple inheritance on the other hand is a feature in which a class can inherit attributes and methods from more than one parent class. As we have seen, a class inherits in this case from one class. In the previous chapter of our tutorial, we have covered inheritance, or more specific "single inheritance". ![]()
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