replace 'except:' with 'except Exception:'

what could possibly go wrong

synapse/handlers/federation.py

@@ -227,7 +227,7 @@ class FederationHandler(BaseHandler):
                 state, auth_chain = yield self.replication_layer.get_state_for_room(
                     origin, pdu.room_id, pdu.event_id,
                 )
-            except:
+            except Exception:
                 logger.exception("Failed to get state for event: %s", pdu.event_id)
 
         yield self._process_received_pdu(
@@ -461,7 +461,7 @@ class FederationHandler(BaseHandler):
         def check_match(id):
             try:
                 return server_name == get_domain_from_id(id)
-            except:
+            except Exception:
                 return False
 
         # Parses mapping `event_id -> (type, state_key) -> state event_id`
@@ -499,7 +499,7 @@ class FederationHandler(BaseHandler):
                             continue
                         try:
                             domain = get_domain_from_id(ev.state_key)
-                        except:
+                        except Exception:
                             continue
 
                         if domain != server_name:
@@ -738,7 +738,7 @@ class FederationHandler(BaseHandler):
                         joined_domains[dom] = min(d, old_d)
                     else:
                         joined_domains[dom] = d
-                except:
+                except Exception:
                     pass
 
             return sorted(joined_domains.items(), key=lambda d: d[1])
@@ -940,7 +940,7 @@ class FederationHandler(BaseHandler):
                     room_creator_user_id="",
                     is_public=False
                 )
-            except:
+            except Exception:
                 # FIXME
                 pass
 
@@ -1775,7 +1775,7 @@ class FederationHandler(BaseHandler):
                     [e_id for e_id, _ in event.auth_events]
                 )
                 seen_events = set(have_events.keys())
-            except:
+            except Exception:
                 # FIXME:
                 logger.exception("Failed to get auth chain")
 
@@ -1899,7 +1899,7 @@ class FederationHandler(BaseHandler):
                         except AuthError:
                             pass
 
-                except:
+                except Exception:
                     # FIXME:
                     logger.exception("Failed to query auth chain")
 
@@ -1966,7 +1966,7 @@ class FederationHandler(BaseHandler):
         def get_next(it, opt=None):
             try:
                 return it.next()
-            except:
+            except Exception:
                 return opt
 
         current_local = get_next(local_iter)

synapse/handlers/initial_sync.py

@@ -214,7 +214,7 @@ class InitialSyncHandler(BaseHandler):
                     })
 
                 d["account_data"] = account_data_events
-            except:
+            except Exception:
                 logger.exception("Failed to get snapshot")
 
         yield concurrently_execute(handle_room, room_list, 10)

synapse/handlers/message.py

@@ -563,7 +563,7 @@ class MessageHandler(BaseHandler):
         try:
             dump = ujson.dumps(unfreeze(event.content))
             ujson.loads(dump)
-        except:
+        except Exception:
             logger.exception("Failed to encode content: %r", event.content)
             raise
 

synapse/handlers/presence.py

@@ -364,7 +364,7 @@ class PresenceHandler(object):
                 )
 
             preserve_fn(self._update_states)(changes)
-        except:
+        except Exception:
             logger.exception("Exception in _handle_timeouts loop")
 
     @defer.inlineCallbacks

synapse/handlers/profile.py

@@ -118,7 +118,7 @@ class ProfileHandler(BaseHandler):
                     logger.exception("Failed to get displayname")
 
                 raise
-            except:
+            except Exception:
                 logger.exception("Failed to get displayname")
             else:
                 defer.returnValue(result["displayname"])
@@ -165,7 +165,7 @@ class ProfileHandler(BaseHandler):
                 if e.code != 404:
                     logger.exception("Failed to get avatar_url")
                 raise
-            except:
+            except Exception:
                 logger.exception("Failed to get avatar_url")
 
             defer.returnValue(result["avatar_url"])
@@ -266,7 +266,7 @@ class ProfileHandler(BaseHandler):
                     },
                     ignore_backoff=True,
                 )
-            except:
+            except Exception:
                 logger.exception("Failed to get avatar_url")
 
                 yield self.store.update_remote_profile_cache(

synapse/handlers/register.py

@@ -289,7 +289,7 @@ class RegistrationHandler(BaseHandler):
             try:
                 identity_handler = self.hs.get_handlers().identity_handler
                 threepid = yield identity_handler.threepid_from_creds(c)
-            except:
+            except Exception:
                 logger.exception("Couldn't validate 3pid")
                 raise RegistrationError(400, "Couldn't validate 3pid")
 

synapse/handlers/room.py

@@ -108,7 +108,7 @@ class RoomCreationHandler(BaseHandler):
         for i in invite_list:
             try:
                 UserID.from_string(i)
-            except:
+            except Exception:
                 raise SynapseError(400, "Invalid user_id: %s" % (i,))
 
         invite_3pid_list = config.get("invite_3pid", [])

synapse/handlers/search.py

@@ -61,7 +61,7 @@ class SearchHandler(BaseHandler):
                 assert batch_group is not None
                 assert batch_group_key is not None
                 assert batch_token is not None
-            except:
+            except Exception:
                 raise SynapseError(400, "Invalid batch")
 
         try: