def load_pem_private_key(self, data, password):
        """
        Loads a private key from PEM encoded data, using the provided password
        if the data is encrypted.
        """

        Loads a private key from PEM encoded data, using the provided password
        if the data is encrypted.
        
stackoverflow/venv/lib/python3.6/site-packages/cryptography/hazmat/backends/interfaces.py