Used PyCharms inspectors.

1 files changed, 4 insertions, 4 deletions

diff --git a/libbe/command/diff.py b/libbe/command/diff.py
index d8aea37..aca54c3 100644
--- a/libbe/command/diff.py
+++ b/libbe/command/diff.py
@@ -97,18 +97,18 @@ class Diff (libbe.command.Command):
 
 
     def diff(self, bugdir, subscriptions, params):
-        if params['repo'] == None:
+        if params['repo'] is None:
             if bugdir.storage.versioned == False:
                 raise libbe.command.UserError(
                     'This repository is not revision-controlled.')
-            if params['revision'] == None: # get the most recent revision
+            if params['revision'] is None: # get the most recent revision
                 params['revision'] = bugdir.storage.revision_id(-1)
             old_bd = libbe.bugdir.RevisionedBugDir(bugdir, params['revision'])
         else:
             old_storage = libbe.storage.get_storage(params['repo'])
             old_storage.connect()
             old_bd_current = libbe.bugdir.BugDir(old_storage, from_disk=True)
-            if params['revision'] == None: # use the current working state
+            if params['revision'] is None: # use the current working state
                 old_bd = old_bd_current
             else:
                 if old_bd_current.storage.versioned == False:
@@ -127,7 +127,7 @@ class Diff (libbe.command.Command):
             print('\n'.join(uuids), file=self.stdout)
         else :
             rep = tree.report_string()
-            if rep != None:
+            if rep is not None:
                 print(rep, file=self.stdout)
         return 0