Convert packaging/* to py3/py2.4 syntax (#3702)

lib/ansible/modules/packaging/os/apt_repository.py

@@ -273,7 +273,8 @@ class SourcesList(object):
 
                     try:
                         f.write(line)
-                    except IOError, err:
+                    except IOError:
+                        err = get_exception()
                         self.module.fail_json(msg="Failed to write to file %s: %s" % (tmp_path, unicode(err)))
                 self.module.atomic_move(tmp_path, filename)
 
@@ -451,7 +452,7 @@ def main():
         argument_spec=dict(
             repo=dict(required=True),
             state=dict(choices=['present', 'absent'], default='present'),
-            mode=dict(required=False, default=0644),
+            mode=dict(required=False, default=int('0644',8)),
             update_cache = dict(aliases=['update-cache'], type='bool', default='yes'),
             filename=dict(required=False, default=None),
             # this should not be needed, but exists as a failsafe
@@ -488,7 +489,8 @@ def main():
             sourceslist.add_source(repo)
         elif state == 'absent':
             sourceslist.remove_source(repo)
-    except InvalidSource, err:
+    except InvalidSource:
+        err = get_exception()
         module.fail_json(msg='Invalid repository string: %s' % unicode(err))
 
     sources_after = sourceslist.dump()
@@ -510,7 +512,8 @@ def main():
             if update_cache:
                 cache = apt.Cache()
                 cache.update()
-        except OSError, err:
+        except OSError:
+            err = get_exception()
             module.fail_json(msg=unicode(err))
 
     module.exit_json(changed=changed, repo=repo, state=state, diff=diff)