# utils.py
class PaymentChecker(object):
....
payment_checker = PaymentChecker(<some constant args>)
# views.py
import utils
class CheckPayment(View):
def get(...):
if utils.payment_checker.check(...):
....
_payment_checker = None
def get_payment_checker():
global _payment_checker
if _payment_checker is None:
_payment_checker = PaymentChecker(<some constant args>)
return _payment_checkerclass PaymentChecker(object):
__instance = None
@classmethod
def get_checker(cls):
if cls.__instance is None:
cls.__instance = cls(<some constant args>)
return cls.__instance