Run latest black on synapse and tests.

Black's behaviour has changed:

- Black now normalizes string prefix order (psf/black#2297)
- Remove spaces around power operators if both operands are
  simple (psf/black#2726)
- There's also one string subsitution expression that changed,  but I
  couldn't see a corresponding changelog entry and didn't feel like
  bisecting.

synapse/api/constants.py

@@ -23,7 +23,7 @@
 MAX_PDU_SIZE = 65536
 
 # the "depth" field on events is limited to 2**63 - 1
-MAX_DEPTH = 2 ** 63 - 1
+MAX_DEPTH = 2**63 - 1
 
 # the maximum length for a room alias is 255 characters
 MAX_ALIAS_LENGTH = 255

synapse/appservice/scheduler.py

@@ -428,7 +428,7 @@ def _retry() -> None:
                 "as-recoverer-%s" % (self.service.id,), self.retry
             )
 
-        delay = 2 ** self.backoff_counter
+        delay = 2**self.backoff_counter
         logger.info("Scheduling retries on %s in %fs", self.service.id, delay)
         self.clock.call_later(delay, _retry)
 

synapse/crypto/keyring.py

@@ -182,7 +182,7 @@ def __init__(
         vk = get_verify_key(hs.signing_key)
         self._local_verify_keys[f"{vk.alg}:{vk.version}"] = FetchKeyResult(
             verify_key=vk,
-            valid_until_ts=2 ** 63,  # fake future timestamp
+            valid_until_ts=2**63,  # fake future timestamp
         )
 
     async def verify_json_for_server(

synapse/events/utils.py

@@ -49,7 +49,7 @@
 #       the literal fields "foo\" and "bar" but will instead be treated as "foo\\.bar"
 SPLIT_FIELD_REGEX = re.compile(r"(?<!\\)\.")
 
-CANONICALJSON_MAX_INT = (2 ** 53) - 1
+CANONICALJSON_MAX_INT = (2**53) - 1
 CANONICALJSON_MIN_INT = -CANONICALJSON_MAX_INT
 
 

synapse/http/proxyagent.py

@@ -41,7 +41,7 @@
 
 logger = logging.getLogger(__name__)
 
-_VALID_URI = re.compile(br"\A[\x21-\x7e]+\Z")
+_VALID_URI = re.compile(rb"\A[\x21-\x7e]+\Z")
 
 
 @implementer(IAgent)

synapse/replication/http/_base.py

@@ -275,7 +275,7 @@ async def send_request(*, instance_name: str = "master", **kwargs: Any) -> Any:
                             if attempts > cls.RETRY_ON_CONNECT_ERROR_ATTEMPTS:
                                 raise
 
-                            delay = 2 ** attempts
+                            delay = 2**attempts
                             logger.warning(
                                 "%s request connection failed; retrying in %ds: %r",
                                 cls.NAME,

synapse/rest/media/v1/media_storage.py

@@ -352,7 +352,7 @@ class ReadableFileWrapper:
     `IConsumer`.
     """
 
-    CHUNK_SIZE = 2 ** 14
+    CHUNK_SIZE = 2**14
 
     clock: Clock
     path: str

synapse/rest/media/v1/preview_html.py

@@ -23,10 +23,10 @@
 logger = logging.getLogger(__name__)
 
 _charset_match = re.compile(
-    br'<\s*meta[^>]*charset\s*=\s*"?([a-z0-9_-]+)"?', flags=re.I
+    rb'<\s*meta[^>]*charset\s*=\s*"?([a-z0-9_-]+)"?', flags=re.I
 )
 _xml_encoding_match = re.compile(
-    br'\s*<\s*\?\s*xml[^>]*encoding="([a-z0-9_-]+)"', flags=re.I
+    rb'\s*<\s*\?\s*xml[^>]*encoding="([a-z0-9_-]+)"', flags=re.I
 )
 _content_type_match = re.compile(r'.*; *charset="?(.*?)"?(;|$)', flags=re.I)
 

synapse/storage/database.py

@@ -63,7 +63,7 @@
     from synapse.server import HomeServer
 
 # python 3 does not have a maximum int value
-MAX_TXN_ID = 2 ** 63 - 1
+MAX_TXN_ID = 2**63 - 1
 
 logger = logging.getLogger(__name__)
 

synapse/util/patch_inline_callbacks.py

@@ -217,13 +217,16 @@ def check_yield_points_inner(
                 # We don't raise here as its perfectly valid for contexts to
                 # change in a function, as long as it sets the correct context
                 # on resolving (which is checked separately).
-                err = "%s changed context from %s to %s, happened between lines %d and %d in %s" % (
-                    frame.f_code.co_name,
-                    expected_context,
-                    current_context(),
-                    last_yield_line_no,
-                    frame.f_lineno,
-                    frame.f_code.co_filename,
+                err = (
+                    "%s changed context from %s to %s, happened between lines %d and %d in %s"
+                    % (
+                        frame.f_code.co_name,
+                        expected_context,
+                        current_context(),
+                        last_yield_line_no,
+                        frame.f_lineno,
+                        frame.f_code.co_filename,
+                    )
                 )
                 changes.append(err)
 

synapse/util/retryutils.py

@@ -30,7 +30,7 @@
 RETRY_MULTIPLIER = 5
 
 # a cap on the backoff. (Essentially none)
-MAX_RETRY_INTERVAL = 2 ** 62
+MAX_RETRY_INTERVAL = 2**62
 
 
 class NotRetryingDestination(Exception):

tests/handlers/test_federation.py

@@ -496,8 +496,8 @@ def test_valid_json(self) -> None:
     def test_invalid_numbers(self) -> None:
         """Invalid values for an integer should be rejected, all floats should be rejected."""
         for value in [
-            -(2 ** 53),
-            2 ** 53,
+            -(2**53),
+            2**53,
             1.0,
             float("inf"),
             float("-inf"),
@@ -524,7 +524,7 @@ def test_invalid_nested(self) -> None:
             event_from_pdu_json(
                 {
                     "type": EventTypes.Message,
-                    "content": {"foo": [{"bar": 2 ** 56}]},
+                    "content": {"foo": [{"bar": 2**56}]},
                     "room_id": "!room:test",
                     "sender": "@user:test",
                     "depth": 1,

tests/replication/_base.py

@@ -206,7 +206,7 @@ def assert_request_is_get_repl_stream_updates(
         path: bytes = request.path  # type: ignore
         self.assertRegex(
             path,
-            br"^/_synapse/replication/get_repl_stream_updates/%s/[^/]+$"
+            rb"^/_synapse/replication/get_repl_stream_updates/%s/[^/]+$"
             % (stream_name.encode("ascii"),),
         )