init.py
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init.py
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	from abc import ABC, abstractmethod


	VERSION = 1

	cache = { }


	def get_handler(version=None):
	if not version:
	version = VERSION

	if version not in cache:
	try:
	exec(f'from .v{version} import Handler as Crypto_v{version}')
	exec(f'cache[{version}] = Crypto_v{version}')

	except ModuleNotFoundError:
	cache[version] = None

	handler = cache[version]

	if not handler:
	raise ValueError(f'crypto version {version}')

	return handler()


	class Handler(ABC):
	def __init__(self):
	pass

	@abstractmethod
	def register(self):
	raise NotImplemented()