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Using Abstract Base Classes (ABC)

An abstract class acts as a blueprint for the algorithms developed for a theoretical pattern model. It allows the coders to create a set of methods that must be created within any algorithm built from the abstract class.

In PAMI, abstract base class provides a common Application Program Interface(API) for a set of algorithms (or subclasses).

Default file name of an Abstract class

In PAMI, the file name for creating an abstract base class is “abstract.py”

Creating an abstract class

#Step 1: import ABC 
from abc import ABC as _ABC, abstractmethod as _abstractmethod

#Step 2: Create an abstract class with ABC as an input parameter
class _theoreticalPattern(ABC):
    #Step 3: declare an abstract method

    @abstractmethod
    def methodName(self):
        pass
    #Step 4: declaring an abstract variable
    @property
    @abstractmethod
    def variableName(self):
        pass

Using an abstract class

```Python #Step 1: Importing an abstract class import abstract as _ab

#Step 2: Using an abstract class in an algorithm (or subclass) class patternMiningAlgorithm(_ab._theoreticalPattern):

#Step3: declare your variables and write your code here.

``’