Upgrade hacking version and fix some of the issues

Update hacking to the new requirements version and
fix about half of the new reported issues. The other
hacking issues are for now ignored until fixed by
adjusting our tox.ini file.

This commit fixes the following new hacking errors:

H405 - multi line docstring summary not separated
       with an empty line
E265 - block comment should start with '# '
F402 - import 'endpoint' from line 21 shadowed by
       loop variable

Change-Id: I6bae61591fb988cc17fa79e21cb5f1508d22781c

1 files changed, 2 insertions, 4 deletions

diff --git a/taskflow/engines/worker_based/executor.py b/taskflow/engines/worker_based/executor.py
index 98ff3a8..37ea8bd 100644
--- a/taskflow/engines/worker_based/executor.py
+++ b/taskflow/engines/worker_based/executor.py
@@ -216,7 +216,7 @@ class WorkerTaskExecutor(executor.TaskExecutorBase):
         return async_utils.wait_for_any(fs, timeout)
 
     def start(self):
-        """Start proxy thread (and associated topic notification thread)."""
+        """Starts proxy thread and associated topic notification thread."""
         if not _is_alive(self._proxy_thread):
             self._proxy_thread = tu.daemon_thread(self._proxy.start)
             self._proxy_thread.start()
@@ -227,9 +227,7 @@ class WorkerTaskExecutor(executor.TaskExecutorBase):
             self._periodic_thread.start()
 
     def stop(self):
-        """Stop proxy thread (and associated topic notification thread), so
-        those threads will be gracefully terminated.
-        """
+        """Stops proxy thread and associated topic notification thread."""
         if self._periodic_thread is not None:
             self._periodic.stop()
             self._periodic_thread.join()