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

3 files changed, 8 insertions, 3 deletions

diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py
index 3944780a42..0bfc5e445f 100644
--- a/synapse/appservice/__init__.py
+++ b/synapse/appservice/__init__.py
@@ -166,7 +166,10 @@ class ApplicationService:
 
     @cached(num_args=1, cache_context=True)
     async def matches_user_in_member_list(
-        self, room_id: str, store: "DataStore", cache_context: _CacheContext,
+        self,
+        room_id: str,
+        store: "DataStore",
+        cache_context: _CacheContext,
     ) -> bool:
         """Check if this service is interested a room based upon it's membership
 
diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py
index 11aee50f7a..93c2aabcca 100644
--- a/synapse/appservice/api.py
+++ b/synapse/appservice/api.py
@@ -227,7 +227,9 @@ class ApplicationServiceApi(SimpleHttpClient):
 
         try:
             await self.put_json(
-                uri=uri, json_body=body, args={"access_token": service.hs_token},
+                uri=uri,
+                json_body=body,
+                args={"access_token": service.hs_token},
             )
             sent_transactions_counter.labels(service.id).inc()
             sent_events_counter.labels(service.id).inc(len(events))
diff --git a/synapse/appservice/scheduler.py b/synapse/appservice/scheduler.py
index 58291afc22..366c476f80 100644
--- a/synapse/appservice/scheduler.py
+++ b/synapse/appservice/scheduler.py
@@ -68,7 +68,7 @@ MAX_EPHEMERAL_EVENTS_PER_TRANSACTION = 100
 
 
 class ApplicationServiceScheduler:
-    """ Public facing API for this module. Does the required DI to tie the
+    """Public facing API for this module. Does the required DI to tie the
     components together. This also serves as the "event_pool", which in this
     case is a simple array.
     """