from abc import abstractmethod

# the client only need to know
# how to handle abstract classess
class AbstractLetter:
  	pass
class AbstractResume:
  	pass
class AbstractDocumentCreator: # Abstract Factory
    @abstractmethod
    def createLetter() -> AbstractLetter:
      	pass
    @abstractmethod
    def createResume() -> AbstractResume:
      	pass

class FancyLetter(AbstractLetter):
  	pass
class FancyResume(AbstractResume):
  	pass
class FancyDocumentCreator(AbstractDocumentCreator): # Concrete Factory
  	def createLetter() -> FancyLetter: # a factory: where concrete objects are created
      	pass
    def createResume() -> FancyResume: # a factory: where concrete objects are created
      	pass

class ModernLetter(AbstractLetter):
  	pass
class ModernResume(AbstractResume):
  	pass
class ModernDocumentCreator(AbstractDocumentCreator):
  	def createLetter() -> ModernLetter: # a factory: where concrete objects are created
      	pass
    def createResume() -> ModernResume: # a factory: where concrete objects are created
      	pass