jwt_modified.py

import jwt
import sys

class InitializeJWT(object ):

    _instance = None
    def __new__(cls, private_path, public_path):
        try:
            cls._publickey_file = open(public_path, "r")
            cls._privatekey_file = open(private_path, "r")
        except:
            raise IOError
            sys.exit()

        else:
            cls._public_key = cls._publickey_file.read()
            cls._private_key = cls._privatekey_file.read()
        if not isinstance(cls._instance, cls):
            cls._instance = object.__new__(cls)
        return cls._instance

class JwtModule(InitializeJWT):

    @classmethod
    def encoding(cls, payload):
        return jwt.encode(payload, cls._private_key, algorithm="RS512")
    
    @classmethod
    def decoding(cls, encoded_token):    
        return jwt.decode(encoded_token, cls._public_key, verify=True)