(self)
return self._protocol
The protocol version chosen when constructing the context.
        This attribute is read-only.
The protocol version chosen when constructing the context.
        This attribute is read-only.
The protocol version chosen when constructing the context . This attribute is read - only .
def protocol(self):
        """The protocol version chosen when constructing the context.
        This attribute is read-only.
        """
        return self._protocol
def protocol ( self ) : return self . _protocol