Update black, and run auto formatting over the codebase (#9381)

 - Update black version to the latest
 - Run black auto formatting over the codebase
    - Run autoformatting according to [`docs/code_style.md
`](https://github.com/matrix-org/synapse/blob/80d6dc9783aa80886a133756028984dbf8920168/docs/code_style.md)
 - Update `code_style.md` docs around installing black to use the correct version

4 files changed, 11 insertions, 12 deletions

diff --git a/synapse/rest/admin/groups.py b/synapse/rest/admin/groups.py
index d0c86b204a..ebc587aa06 100644
--- a/synapse/rest/admin/groups.py
+++ b/synapse/rest/admin/groups.py
@@ -22,8 +22,7 @@ logger = logging.getLogger(__name__)
 
 
 class DeleteGroupAdminRestServlet(RestServlet):
-    """Allows deleting of local groups
-    """
+    """Allows deleting of local groups"""
 
     PATTERNS = admin_patterns("/delete_group/(?P<group_id>[^/]*)")
 
diff --git a/synapse/rest/admin/media.py b/synapse/rest/admin/media.py
index 8720b1401f..b996862c05 100644
--- a/synapse/rest/admin/media.py
+++ b/synapse/rest/admin/media.py
@@ -119,8 +119,7 @@ class QuarantineMediaByID(RestServlet):
 
 
 class ProtectMediaByID(RestServlet):
-    """Protect local media from being quarantined.
-    """
+    """Protect local media from being quarantined."""
 
     PATTERNS = admin_patterns("/media/protect/(?P<media_id>[^/]+)")
 
@@ -141,8 +140,7 @@ class ProtectMediaByID(RestServlet):
 
 
 class ListMediaInRoom(RestServlet):
-    """Lists all of the media in a given room.
-    """
+    """Lists all of the media in a given room."""
 
     PATTERNS = admin_patterns("/room/(?P<room_id>[^/]+)/media")
 
@@ -180,8 +178,7 @@ class PurgeMediaCacheRestServlet(RestServlet):
 
 
 class DeleteMediaByID(RestServlet):
-    """Delete local media by a given ID. Removes it from this server.
-    """
+    """Delete local media by a given ID. Removes it from this server."""
 
     PATTERNS = admin_patterns("/media/(?P<server_name>[^/]+)/(?P<media_id>[^/]+)")
 
diff --git a/synapse/rest/admin/rooms.py b/synapse/rest/admin/rooms.py
index 491f9ca095..1a3a36f6cf 100644
--- a/synapse/rest/admin/rooms.py
+++ b/synapse/rest/admin/rooms.py
@@ -482,7 +482,8 @@ class MakeRoomAdminRestServlet(RestServlet):
 
             if not admin_user_id:
                 raise SynapseError(
-                    400, "No local admin user in room",
+                    400,
+                    "No local admin user in room",
                 )
 
             pl_content = power_levels.content
@@ -492,7 +493,8 @@ class MakeRoomAdminRestServlet(RestServlet):
             admin_user_id = create_event.sender
             if not self.is_mine_id(admin_user_id):
                 raise SynapseError(
-                    400, "No local admin user in room",
+                    400,
+                    "No local admin user in room",
                 )
 
         # Grant the user power equal to the room admin by attempting to send an
@@ -502,7 +504,8 @@ class MakeRoomAdminRestServlet(RestServlet):
         new_pl_content["users"][user_to_add] = new_pl_content["users"][admin_user_id]
 
         fake_requester = create_requester(
-            admin_user_id, authenticated_entity=requester.authenticated_entity,
+            admin_user_id,
+            authenticated_entity=requester.authenticated_entity,
         )
 
         try:
diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index 9350c704b9..998a0ef671 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -579,7 +579,7 @@ class ResetPasswordRestServlet(RestServlet):
             }
         Returns:
             200 OK with empty object if success otherwise an error.
-        """
+    """
 
     PATTERNS = admin_patterns("/reset_password/(?P<target_user_id>[^/]*)")