def getTimeout(self):
        """
        Returns the timeout value set on this test. Checks on the instance
        first, then the class, then the module, then packages. As soon as it
        finds something with a C{timeout} attribute, returns that. Returns
        L{util.DEFAULT_TIMEOUT_DURATION} if it cannot find anything. See
        L{TestCase} docstring for more details.
        """
        timeout =  util.acquireAttribute(self._parents, 'timeout',
                                         util.DEFAULT_TIMEOUT_DURATION)
        try:
            return float(timeout)
        except (ValueError, TypeError):
            # XXX -- this is here because sometimes people will have methods
            # called 'timeout', or set timeout to 'orange', or something
            # Particularly, test_news.NewsTestCase and ReactorCoreTestCase
            # both do this.
            warnings.warn("'timeout' attribute needs to be a number.",
                          category=DeprecationWarning)
            return util.DEFAULT_TIMEOUT_DURATION

        Returns the timeout value set on this test. Checks on the instance
        first, then the class, then the module, then packages. As soon as it
        finds something with a C{timeout} attribute, returns that. Returns
        L{util.DEFAULT_TIMEOUT_DURATION} if it cannot find anything. See
        L{TestCase} docstring for more details.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/_asynctest.py