diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index a5aa2185a2..28062dd69d 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -213,7 +213,7 @@ def handle_startup_exception(e: Exception) -> NoReturn:
def redirect_stdio_to_logs() -> None:
streams = [("stdout", LogLevel.info), ("stderr", LogLevel.error)]
- for (stream, level) in streams:
+ for stream, level in streams:
oldStream = getattr(sys, stream)
loggingFile = LoggingFile(
logger=twisted.logger.Logger(namespace=stream),
diff --git a/synapse/app/complement_fork_starter.py b/synapse/app/complement_fork_starter.py
index 920538f44d..c8dc3f9d76 100644
--- a/synapse/app/complement_fork_starter.py
+++ b/synapse/app/complement_fork_starter.py
@@ -219,7 +219,7 @@ def main() -> None:
# memory space and don't need to repeat the work of loading the code!
# Instead of using fork() directly, we use the multiprocessing library,
# which uses fork() on Unix platforms.
- for (func, worker_args) in zip(worker_functions, args_by_worker):
+ for func, worker_args in zip(worker_functions, args_by_worker):
process = multiprocessing.Process(
target=_worker_entrypoint, args=(func, proxy_reactor, worker_args)
)
diff --git a/synapse/app/generic_worker.py b/synapse/app/generic_worker.py
index 946f3a3807..0dec24369a 100644
--- a/synapse/app/generic_worker.py
+++ b/synapse/app/generic_worker.py
@@ -157,7 +157,6 @@ class GenericWorkerServer(HomeServer):
DATASTORE_CLASS = GenericWorkerSlavedStore # type: ignore
def _listen_http(self, listener_config: ListenerConfig) -> None:
-
assert listener_config.http_options is not None
# We always include a health resource.
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 6176a70eb2..b8830b1a9c 100644
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -321,7 +321,6 @@ def setup(config_options: List[str]) -> SynapseHomeServer:
and not config.registration.registrations_require_3pid
and not config.registration.registration_requires_token
):
-
raise ConfigError(
"You have enabled open registration without any verification. This is a known vector for "
"spam and abuse. If you would like to allow public registration, please consider adding email, "
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