replace 'except:' with 'except Exception:'

what could possibly go wrong

synapse/rest/client/v1/directory.py

@@ -93,7 +93,7 @@ class ClientDirectoryServer(ClientV1RestServlet):
                 )
             except SynapseError as e:
                 raise e
-            except:
+            except Exception:
                 logger.exception("Failed to create association")
                 raise
         except AuthError:

synapse/rest/client/v1/presence.py

@@ -78,7 +78,7 @@ class PresenceStatusRestServlet(ClientV1RestServlet):
                 raise KeyError()
         except SynapseError as e:
             raise e
-        except:
+        except Exception:
             raise SynapseError(400, "Unable to parse state")
 
         yield self.presence_handler.set_state(user, state)

synapse/rest/client/v1/profile.py

@@ -52,7 +52,7 @@ class ProfileDisplaynameRestServlet(ClientV1RestServlet):
 
         try:
             new_name = content["displayname"]
-        except:
+        except Exception:
             defer.returnValue((400, "Unable to parse name"))
 
         yield self.profile_handler.set_displayname(
@@ -94,7 +94,7 @@ class ProfileAvatarURLRestServlet(ClientV1RestServlet):
         content = parse_json_object_from_request(request)
         try:
             new_name = content["avatar_url"]
-        except:
+        except Exception:
             defer.returnValue((400, "Unable to parse name"))
 
         yield self.profile_handler.set_avatar_url(

synapse/rest/client/v1/room.py

@@ -238,7 +238,7 @@ class JoinRoomAliasServlet(ClientV1RestServlet):
 
         try:
             content = parse_json_object_from_request(request)
-        except:
+        except Exception:
             # Turns out we used to ignore the body entirely, and some clients
             # cheekily send invalid bodies.
             content = {}
@@ -247,7 +247,7 @@ class JoinRoomAliasServlet(ClientV1RestServlet):
             room_id = room_identifier
             try:
                 remote_room_hosts = request.args["server_name"]
-            except:
+            except Exception:
                 remote_room_hosts = None
         elif RoomAlias.is_valid(room_identifier):
             handler = self.handlers.room_member_handler
@@ -587,7 +587,7 @@ class RoomMembershipRestServlet(ClientV1RestServlet):
 
         try:
             content = parse_json_object_from_request(request)
-        except:
+        except Exception:
             # Turns out we used to ignore the body entirely, and some clients
             # cheekily send invalid bodies.
             content = {}

synapse/rest/client/v2_alpha/filter.py

@@ -50,7 +50,7 @@ class GetFilterRestServlet(RestServlet):
 
         try:
             filter_id = int(filter_id)
-        except:
+        except Exception:
             raise SynapseError(400, "Invalid filter_id")
 
         try:

synapse/rest/client/v2_alpha/sync.py

@@ -125,7 +125,7 @@ class SyncRestServlet(RestServlet):
                     filter_object = json.loads(filter_id)
                     set_timeline_upper_limit(filter_object,
                                              self.hs.config.filter_timeline_limit)
-                except:
+                except Exception:
                     raise SynapseError(400, "Invalid filter JSON")
                 self.filtering.check_valid_filter(filter_object)
                 filter = FilterCollection(filter_object)

synapse/rest/client/v2_alpha/user_directory.py

@@ -65,7 +65,7 @@ class UserDirectorySearchRestServlet(RestServlet):
 
         try:
             search_term = body["search_term"]
-        except:
+        except Exception:
             raise SynapseError(400, "`search_term` is required field")
 
         results = yield self.user_directory_handler.search_users(