2 files changed, 8 insertions, 1 deletions
diff --git a/activity.py b/activity.py
index f2896f2..45e1111 100644
--- a/activity.py
+++ b/activity.py
@@ -496,7 +496,7 @@ class SimpleGraph(activity.Activity):
 
         if sharer:
             _logger.debug('This is my activity: making a tube...')
-            id = self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(
+            self.tubes_chan[telepathy.CHANNEL_TYPE_TUBES].OfferDBusTube(
                 SERVICE, {})
         else:
             _logger.debug('I am joining an activity: waiting for a tube...')
diff --git a/readers.py b/readers.py
index c79131f..286b330 100644
--- a/readers.py
+++ b/readers.py
@@ -26,6 +26,13 @@ from gettext import gettext as _
 
 class StopWatchReader():
 
+    """Reader for StopWatch activity.
+
+    If the data has only one stopwatch with marks, graphic the marks.
+    Else, graphic the final time of the stopwatches.
+
+    """
+
     def __init__(self, data):
         """Import chart data from file."""