Fix flake8 warnings for new flake8

setup.cfg

@@ -16,3 +16,4 @@ ignore =
 
 [flake8]
 max-line-length = 90
+ignore = W503

synapse/app/__init__.py

@@ -12,3 +12,22 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+import sys
+sys.dont_write_bytecode = True
+
+from synapse.python_dependencies import (
+    check_requirements, MissingRequirementError
+)  # NOQA
+
+try:
+    check_requirements()
+except MissingRequirementError as e:
+    message = "\n".join([
+        "Missing Requirement: %s" % (e.message,),
+        "To install run:",
+        "    pip install --upgrade --force \"%s\"" % (e.dependency,),
+        "",
+    ])
+    sys.stderr.writelines(message)
+    sys.exit(1)

synapse/app/homeserver.py

@@ -14,27 +14,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import sys
-from synapse.rest import ClientRestResource
+import synapse
+
+import contextlib
+import logging
+import os
+import re
+import resource
+import subprocess
+import sys
+import time
 
-sys.dont_write_bytecode = True
 from synapse.python_dependencies import (
-    check_requirements, DEPENDENCY_LINKS, MissingRequirementError
+    check_requirements, DEPENDENCY_LINKS
 )
 
-if __name__ == '__main__':
-    try:
-        check_requirements()
-    except MissingRequirementError as e:
-        message = "\n".join([
-            "Missing Requirement: %s" % (e.message,),
-            "To install run:",
-            "    pip install --upgrade --force \"%s\"" % (e.dependency,),
-            "",
-        ])
-        sys.stderr.writelines(message)
-        sys.exit(1)
-
+from synapse.rest import ClientRestResource
 from synapse.storage.engines import create_engine, IncorrectDatabaseSetup
 from synapse.storage import are_all_users_on_domain
 from synapse.storage.prepare_database import UpgradeDatabaseException
@@ -73,17 +68,6 @@ from synapse import events
 
 from daemonize import Daemonize
 
-import synapse
-
-import contextlib
-import logging
-import os
-import re
-import resource
-import subprocess
-import time
-
-
 logger = logging.getLogger("synapse.app.homeserver")
 
 

synapse/handlers/directory.py

@@ -175,8 +175,8 @@ class DirectoryHandler(BaseHandler):
         # If this server is in the list of servers, return it first.
         if self.server_name in servers:
             servers = (
-                [self.server_name]
-                + [s for s in servers if s != self.server_name]
+                [self.server_name] +
+                [s for s in servers if s != self.server_name]
             )
         else:
             servers = list(servers)

synapse/rest/client/v1/register.py

@@ -38,7 +38,8 @@ logger = logging.getLogger(__name__)
 if hasattr(hmac, "compare_digest"):
     compare_digest = hmac.compare_digest
 else:
-    compare_digest = lambda a, b: a == b
+    def compare_digest(a, b):
+        return a == b
 
 
 class RegisterRestServlet(ClientV1RestServlet):

synapse/rest/client/v2_alpha/register.py

@@ -34,7 +34,8 @@ from synapse.util.async import run_on_reactor
 if hasattr(hmac, "compare_digest"):
     compare_digest = hmac.compare_digest
 else:
-    compare_digest = lambda a, b: a == b
+    def compare_digest(a, b):
+        return a == b
 
 
 logger = logging.getLogger(__name__)

synapse/rest/client/versions.py

@@ -26,9 +26,7 @@ class VersionsRestServlet(RestServlet):
 
     def on_GET(self, request):
         return (200, {
-            "versions": [
-                "r0.0.1",
-            ]
+            "versions": ["r0.0.1"]
         })
 
 

synapse/storage/_base.py

@@ -643,7 +643,10 @@ class SQLBaseStore(object):
         if not iterable:
             defer.returnValue(results)
 
-        chunks = [iterable[i:i+batch_size] for i in xrange(0, len(iterable), batch_size)]
+        chunks = [
+            iterable[i:i + batch_size]
+            for i in xrange(0, len(iterable), batch_size)
+        ]
         for chunk in chunks:
             rows = yield self.runInteraction(
                 desc,