def rx(self):
if not self._threaded:<EOL><INDENT>self.run()<EOL><DEDENT>try:<EOL><INDENT>return tuple(self._messages.pop(<NUM_LIT:0>))<EOL><DEDENT>except IndexError:<EOL><INDENT>return None<EOL><DEDENT>
Receive a series of bytes that have been verified
:return: a series of bytes as a tuple or None if empty