The Factory Design Pattern

All factories appear to be defined in application_factory.py.

This project adheres to the static factory method pattern.
helpful stack overflow

The Factory Hierarchy

All factories extend the base class of ModuleFactory src code

class ModuleFactory(object):
    """
    General interface for importing a class by its name.
    """
    SUPPORTED = None
    type_str = 'object'

    @classmethod
    def create(cls, name):
        """
        import a class by name
        """
        return select_module(name, cls.type_str, cls.SUPPORTED)

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