diff --git a/synapse/handlers/__init__.py b/synapse/handlers/__init__.py
index d358842b3e..4b9923d8c0 100644
--- a/synapse/handlers/__init__.py
+++ b/synapse/handlers/__init__.py
@@ -13,13 +13,13 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from .register import RegistrationHandler
-from .room import RoomContextHandler
-from .message import MessageHandler
-from .federation import FederationHandler
-from .directory import DirectoryHandler
from .admin import AdminHandler
+from .directory import DirectoryHandler
+from .federation import FederationHandler
from .identity import IdentityHandler
+from .message import MessageHandler
+from .register import RegistrationHandler
+from .room import RoomContextHandler
from .search import SearchHandler
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 2d1db0c245..b6a8b3aa3b 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -18,11 +18,10 @@ import logging
from twisted.internet import defer
import synapse.types
-from synapse.api.constants import Membership, EventTypes
+from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import LimitExceededError
from synapse.types import UserID
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/admin.py b/synapse/handlers/admin.py
index f36b358b45..5d629126fc 100644
--- a/synapse/handlers/admin.py
+++ b/synapse/handlers/admin.py
@@ -13,12 +13,12 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import logging
+
from twisted.internet import defer
from ._base import BaseHandler
-import logging
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/appservice.py b/synapse/handlers/appservice.py
index 1c29c43a83..ec9fe01a5a 100644
--- a/synapse/handlers/appservice.py
+++ b/synapse/handlers/appservice.py
@@ -13,19 +13,18 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from twisted.internet import defer
+import logging
from six import itervalues
+from prometheus_client import Counter
+
+from twisted.internet import defer
+
import synapse
from synapse.api.constants import EventTypes
+from synapse.util.logcontext import make_deferred_yieldable, run_in_background
from synapse.util.metrics import Measure
-from synapse.util.logcontext import (
- make_deferred_yieldable, run_in_background,
-)
-from prometheus_client import Counter
-
-import logging
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index cbef1f2770..402e44cdef 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -14,14 +14,24 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from twisted.internet import defer, threads
+import logging
+import attr
+import bcrypt
+import pymacaroons
from canonicaljson import json
-from ._base import BaseHandler
+from twisted.internet import defer, threads
+from twisted.web.client import PartialDownloadError
+
+import synapse.util.stringutils as stringutils
from synapse.api.constants import LoginType
from synapse.api.errors import (
- AuthError, Codes, InteractiveAuthIncompleteError, LoginError, StoreError,
+ AuthError,
+ Codes,
+ InteractiveAuthIncompleteError,
+ LoginError,
+ StoreError,
SynapseError,
)
from synapse.module_api import ModuleApi
@@ -29,15 +39,7 @@ from synapse.types import UserID
from synapse.util.caches.expiringcache import ExpiringCache
from synapse.util.logcontext import make_deferred_yieldable
-from twisted.web.client import PartialDownloadError
-
-import logging
-import bcrypt
-import pymacaroons
-import attr
-
-import synapse.util.stringutils as stringutils
-
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py
index a84b7b8b80..b3c5a9ee64 100644
--- a/synapse/handlers/deactivate_account.py
+++ b/synapse/handlers/deactivate_account.py
@@ -12,14 +12,15 @@
# 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 logging
+
from twisted.internet import defer
-from ._base import BaseHandler
+from synapse.api.errors import SynapseError
from synapse.types import UserID, create_requester
from synapse.util.logcontext import run_in_background
-from synapse.api.errors import SynapseError
-import logging
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/device.py b/synapse/handlers/device.py
index 11c6fb3657..0b4cd53456 100644
--- a/synapse/handlers/device.py
+++ b/synapse/handlers/device.py
@@ -12,21 +12,23 @@
# 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 logging
+
+from six import iteritems, itervalues
+
+from twisted.internet import defer
+
from synapse.api import errors
from synapse.api.constants import EventTypes
from synapse.api.errors import FederationDeniedError
+from synapse.types import RoomStreamToken, get_domain_from_id
from synapse.util import stringutils
from synapse.util.async import Linearizer
from synapse.util.caches.expiringcache import ExpiringCache
-from synapse.util.retryutils import NotRetryingDestination
from synapse.util.metrics import measure_func
-from synapse.types import get_domain_from_id, RoomStreamToken
-from twisted.internet import defer
-from ._base import BaseHandler
-
-import logging
+from synapse.util.retryutils import NotRetryingDestination
-from six import itervalues, iteritems
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/devicemessage.py b/synapse/handlers/devicemessage.py
index f147a20b73..2e2e5261de 100644
--- a/synapse/handlers/devicemessage.py
+++ b/synapse/handlers/devicemessage.py
@@ -18,10 +18,9 @@ import logging
from twisted.internet import defer
from synapse.api.errors import SynapseError
-from synapse.types import get_domain_from_id, UserID
+from synapse.types import UserID, get_domain_from_id
from synapse.util.stringutils import random_string
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index c5b6e75e03..ef866da1b6 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -14,15 +14,16 @@
# limitations under the License.
+import logging
+import string
+
from twisted.internet import defer
-from ._base import BaseHandler
-from synapse.api.errors import SynapseError, Codes, CodeMessageException, AuthError
from synapse.api.constants import EventTypes
+from synapse.api.errors import AuthError, CodeMessageException, Codes, SynapseError
from synapse.types import RoomAlias, UserID, get_domain_from_id
-import logging
-import string
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/e2e_keys.py b/synapse/handlers/e2e_keys.py
index 62b4892a4e..5816bf8b4f 100644
--- a/synapse/handlers/e2e_keys.py
+++ b/synapse/handlers/e2e_keys.py
@@ -16,14 +16,14 @@
import logging
+from six import iteritems
+
from canonicaljson import encode_canonical_json, json
+
from twisted.internet import defer
-from six import iteritems
-from synapse.api.errors import (
- SynapseError, CodeMessageException, FederationDeniedError,
-)
-from synapse.types import get_domain_from_id, UserID
+from synapse.api.errors import CodeMessageException, FederationDeniedError, SynapseError
+from synapse.types import UserID, get_domain_from_id
from synapse.util.logcontext import make_deferred_yieldable, run_in_background
from synapse.util.retryutils import NotRetryingDestination
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index 8bc642675f..c3f2d7feff 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -13,20 +13,19 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import logging
+import random
+
from twisted.internet import defer
-from synapse.util.logutils import log_function
-from synapse.types import UserID
-from synapse.events.utils import serialize_event
-from synapse.api.constants import Membership, EventTypes
+from synapse.api.constants import EventTypes, Membership
from synapse.events import EventBase
+from synapse.events.utils import serialize_event
+from synapse.types import UserID
+from synapse.util.logutils import log_function
from ._base import BaseHandler
-import logging
-import random
-
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 13117d70fe..d3ecebd29f 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -20,38 +20,42 @@ import itertools
import logging
import sys
-from signedjson.key import decode_verify_key_bytes
-from signedjson.sign import verify_signed_json
import six
-from six.moves import http_client
from six import iteritems
-from twisted.internet import defer
+from six.moves import http_client
+
+from signedjson.key import decode_verify_key_bytes
+from signedjson.sign import verify_signed_json
from unpaddedbase64 import decode_base64
-from ._base import BaseHandler
+from twisted.internet import defer
+from synapse.api.constants import EventTypes, Membership, RejectedReason
from synapse.api.errors import (
- AuthError, FederationError, StoreError, CodeMessageException, SynapseError,
+ AuthError,
+ CodeMessageException,
FederationDeniedError,
+ FederationError,
+ StoreError,
+ SynapseError,
)
-from synapse.api.constants import EventTypes, Membership, RejectedReason
-from synapse.events.validator import EventValidator
-from synapse.util import unwrapFirstError, logcontext
-from synapse.util.metrics import measure_func
-from synapse.util.logutils import log_function
-from synapse.util.async import Linearizer
-from synapse.util.frozenutils import unfreeze
from synapse.crypto.event_signing import (
- compute_event_signature, add_hashes_and_signatures,
+ add_hashes_and_signatures,
+ compute_event_signature,
)
+from synapse.events.utils import prune_event
+from synapse.events.validator import EventValidator
from synapse.state import resolve_events_with_factory
from synapse.types import UserID, get_domain_from_id
-
-from synapse.events.utils import prune_event
-
+from synapse.util import logcontext, unwrapFirstError
+from synapse.util.async import Linearizer
+from synapse.util.distributor import user_joined_room
+from synapse.util.frozenutils import unfreeze
+from synapse.util.logutils import log_function
+from synapse.util.metrics import measure_func
from synapse.util.retryutils import NotRetryingDestination
-from synapse.util.distributor import user_joined_room
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/groups_local.py b/synapse/handlers/groups_local.py
index dcae083734..53e5e2648b 100644
--- a/synapse/handlers/groups_local.py
+++ b/synapse/handlers/groups_local.py
@@ -14,14 +14,15 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from twisted.internet import defer
+import logging
+
from six import iteritems
+from twisted.internet import defer
+
from synapse.api.errors import SynapseError
from synapse.types import get_domain_from_id
-import logging
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/identity.py b/synapse/handlers/identity.py
index 277c2b7760..8c8aedb2b8 100644
--- a/synapse/handlers/identity.py
+++ b/synapse/handlers/identity.py
@@ -24,10 +24,13 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.api.errors import (
- MatrixCodeMessageException, CodeMessageException
+ CodeMessageException,
+ Codes,
+ MatrixCodeMessageException,
+ SynapseError,
)
+
from ._base import BaseHandler
-from synapse.api.errors import SynapseError, Codes
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py
index 71af86fe21..fb11716eb8 100644
--- a/synapse/handlers/initial_sync.py
+++ b/synapse/handlers/initial_sync.py
@@ -13,6 +13,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import logging
+
from twisted.internet import defer
from synapse.api.constants import EventTypes, Membership
@@ -21,9 +23,7 @@ from synapse.events.utils import serialize_event
from synapse.events.validator import EventValidator
from synapse.handlers.presence import format_user_presence_state
from synapse.streams.config import PaginationConfig
-from synapse.types import (
- UserID, StreamToken,
-)
+from synapse.types import StreamToken, UserID
from synapse.util import unwrapFirstError
from synapse.util.async import concurrently_execute
from synapse.util.caches.snapshot_cache import SnapshotCache
@@ -32,9 +32,6 @@ from synapse.visibility import filter_events_for_client
from ._base import BaseHandler
-import logging
-
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index cbadf3c88e..f27f4d3546 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -16,32 +16,29 @@
import logging
import sys
-from canonicaljson import encode_canonical_json, json
import six
-from six import string_types, itervalues, iteritems
+from six import iteritems, itervalues, string_types
+
+from canonicaljson import encode_canonical_json, json
+
from twisted.internet import defer
from twisted.internet.defer import succeed
from twisted.python.failure import Failure
-from synapse.api.constants import EventTypes, Membership, MAX_DEPTH
-from synapse.api.errors import (
- AuthError, Codes, SynapseError,
- ConsentNotGivenError,
-)
+from synapse.api.constants import MAX_DEPTH, EventTypes, Membership
+from synapse.api.errors import AuthError, Codes, ConsentNotGivenError, SynapseError
from synapse.api.urls import ConsentURIBuilder
from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.events.utils import serialize_event
from synapse.events.validator import EventValidator
-from synapse.types import (
- UserID, RoomAlias, RoomStreamToken,
-)
-from synapse.util.async import ReadWriteLock, Limiter
+from synapse.replication.http.send_event import send_event_to_master
+from synapse.types import RoomAlias, RoomStreamToken, UserID
+from synapse.util.async import Limiter, ReadWriteLock
+from synapse.util.frozenutils import frozendict_json_encoder
from synapse.util.logcontext import run_in_background
from synapse.util.metrics import measure_func
-from synapse.util.frozenutils import frozendict_json_encoder
from synapse.util.stringutils import random_string
from synapse.visibility import filter_events_for_client
-from synapse.replication.http.send_event import send_event_to_master
from ._base import BaseHandler
diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py
index 7db59fba00..3732830194 100644
--- a/synapse/handlers/presence.py
+++ b/synapse/handlers/presence.py
@@ -22,27 +22,26 @@ The methods that define policy are:
- should_notify
"""
-from twisted.internet import defer
+import logging
from contextlib import contextmanager
-from six import itervalues, iteritems
+from six import iteritems, itervalues
+
+from prometheus_client import Counter
+
+from twisted.internet import defer
-from synapse.api.errors import SynapseError
from synapse.api.constants import PresenceState
+from synapse.api.errors import SynapseError
+from synapse.metrics import LaterGauge
from synapse.storage.presence import UserPresenceState
-
-from synapse.util.caches.descriptors import cachedInlineCallbacks
+from synapse.types import UserID, get_domain_from_id
from synapse.util.async import Linearizer
+from synapse.util.caches.descriptors import cachedInlineCallbacks
from synapse.util.logcontext import run_in_background
from synapse.util.logutils import log_function
from synapse.util.metrics import Measure
from synapse.util.wheel_timer import WheelTimer
-from synapse.types import UserID, get_domain_from_id
-from synapse.metrics import LaterGauge
-
-import logging
-
-from prometheus_client import Counter
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 3465a787ab..859f6d2b2e 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -17,8 +17,9 @@ import logging
from twisted.internet import defer
-from synapse.api.errors import SynapseError, AuthError, CodeMessageException
+from synapse.api.errors import AuthError, CodeMessageException, SynapseError
from synapse.types import UserID, get_domain_from_id
+
from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/read_marker.py b/synapse/handlers/read_marker.py
index 5142ae153d..995460f82a 100644
--- a/synapse/handlers/read_marker.py
+++ b/synapse/handlers/read_marker.py
@@ -13,13 +13,14 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from ._base import BaseHandler
+import logging
from twisted.internet import defer
from synapse.util.async import Linearizer
-import logging
+from ._base import BaseHandler
+
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/receipts.py b/synapse/handlers/receipts.py
index 2e0672161c..cb905a3903 100644
--- a/synapse/handlers/receipts.py
+++ b/synapse/handlers/receipts.py
@@ -12,17 +12,15 @@
# 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.
-from synapse.util import logcontext
-
-from ._base import BaseHandler
+import logging
from twisted.internet import defer
-from synapse.util.logcontext import PreserveLoggingContext
from synapse.types import get_domain_from_id
+from synapse.util import logcontext
+from synapse.util.logcontext import PreserveLoggingContext
-import logging
-
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index e76ef5426d..7caff0cbc8 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -18,14 +18,19 @@ import logging
from twisted.internet import defer
+from synapse import types
from synapse.api.errors import (
- AuthError, Codes, SynapseError, RegistrationError, InvalidCaptchaError
+ AuthError,
+ Codes,
+ InvalidCaptchaError,
+ RegistrationError,
+ SynapseError,
)
from synapse.http.client import CaptchaServerHttpClient
-from synapse import types
-from synapse.types import UserID, create_requester, RoomID, RoomAlias
+from synapse.types import RoomAlias, RoomID, UserID, create_requester
from synapse.util.async import Linearizer
from synapse.util.threepids import check_3pid_allowed
+
from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index ab72963d87..f67512078b 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -15,23 +15,20 @@
# limitations under the License.
"""Contains functions for performing events on rooms."""
-from twisted.internet import defer
+import logging
+import math
+import string
+from collections import OrderedDict
-from ._base import BaseHandler
+from twisted.internet import defer
-from synapse.types import UserID, RoomAlias, RoomID, RoomStreamToken
-from synapse.api.constants import (
- EventTypes, JoinRules, RoomCreationPreset
-)
+from synapse.api.constants import EventTypes, JoinRules, RoomCreationPreset
from synapse.api.errors import AuthError, Codes, StoreError, SynapseError
+from synapse.types import RoomAlias, RoomID, RoomStreamToken, UserID
from synapse.util import stringutils
from synapse.visibility import filter_events_for_client
-from collections import OrderedDict
-
-import logging
-import math
-import string
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/room_list.py b/synapse/handlers/room_list.py
index fc507cef36..1abd45297b 100644
--- a/synapse/handlers/room_list.py
+++ b/synapse/handlers/room_list.py
@@ -13,26 +13,24 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from twisted.internet import defer
+import logging
+from collections import namedtuple
from six import iteritems
from six.moves import range
-from ._base import BaseHandler
+import msgpack
+from unpaddedbase64 import decode_base64, encode_base64
+
+from twisted.internet import defer
-from synapse.api.constants import (
- EventTypes, JoinRules,
-)
+from synapse.api.constants import EventTypes, JoinRules
+from synapse.types import ThirdPartyInstanceID
from synapse.util.async import concurrently_execute
from synapse.util.caches.descriptors import cachedInlineCallbacks
from synapse.util.caches.response_cache import ResponseCache
-from synapse.types import ThirdPartyInstanceID
-
-from collections import namedtuple
-from unpaddedbase64 import encode_base64, decode_base64
-import logging
-import msgpack
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index f930e939e8..00f2e279bc 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -21,19 +21,17 @@ from six.moves import http_client
from signedjson.key import decode_verify_key_bytes
from signedjson.sign import verify_signed_json
-from twisted.internet import defer
from unpaddedbase64 import decode_base64
+from twisted.internet import defer
+
import synapse.server
import synapse.types
-from synapse.api.constants import (
- EventTypes, Membership,
-)
-from synapse.api.errors import AuthError, SynapseError, Codes
-from synapse.types import UserID, RoomID
+from synapse.api.constants import EventTypes, Membership
+from synapse.api.errors import AuthError, Codes, SynapseError
+from synapse.types import RoomID, UserID
from synapse.util.async import Linearizer
-from synapse.util.distributor import user_left_room, user_joined_room
-
+from synapse.util.distributor import user_joined_room, user_left_room
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/room_member_worker.py b/synapse/handlers/room_member_worker.py
index 493aec1e48..22d8b4b0d3 100644
--- a/synapse/handlers/room_member_worker.py
+++ b/synapse/handlers/room_member_worker.py
@@ -20,11 +20,12 @@ from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.handlers.room_member import RoomMemberHandler
from synapse.replication.http.membership import (
- remote_join, remote_reject_invite, get_or_register_3pid_guest,
+ get_or_register_3pid_guest,
notify_user_membership_change,
+ remote_join,
+ remote_reject_invite,
)
-
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
index 2e3a77ca4b..69ae9731d5 100644
--- a/synapse/handlers/search.py
+++ b/synapse/handlers/search.py
@@ -13,21 +13,20 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from twisted.internet import defer
+import itertools
+import logging
-from ._base import BaseHandler
+from unpaddedbase64 import decode_base64, encode_base64
-from synapse.api.constants import Membership, EventTypes
-from synapse.api.filtering import Filter
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import SynapseError
+from synapse.api.filtering import Filter
from synapse.events.utils import serialize_event
from synapse.visibility import filter_events_for_client
-from unpaddedbase64 import decode_base64, encode_base64
-
-import itertools
-import logging
-
+from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/set_password.py b/synapse/handlers/set_password.py
index e057ae54c9..7ecdede4dc 100644
--- a/synapse/handlers/set_password.py
+++ b/synapse/handlers/set_password.py
@@ -17,6 +17,7 @@ import logging
from twisted.internet import defer
from synapse.api.errors import Codes, StoreError, SynapseError
+
from ._base import BaseHandler
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py
index 7f486e48e5..c24e35362a 100644
--- a/synapse/handlers/sync.py
+++ b/synapse/handlers/sync.py
@@ -13,22 +13,22 @@
# See the License for the specific language governing permissions and
# limitations under the License.
-from synapse.api.constants import Membership, EventTypes
+import collections
+import itertools
+import logging
+
+from six import iteritems, itervalues
+
+from twisted.internet import defer
+
+from synapse.api.constants import EventTypes, Membership
+from synapse.push.clientformat import format_push_rules_for_user
+from synapse.types import RoomStreamToken
from synapse.util.async import concurrently_execute
+from synapse.util.caches.response_cache import ResponseCache
from synapse.util.logcontext import LoggingContext
from synapse.util.metrics import Measure, measure_func
-from synapse.util.caches.response_cache import ResponseCache
-from synapse.push.clientformat import format_push_rules_for_user
from synapse.visibility import filter_events_for_client
-from synapse.types import RoomStreamToken
-
-from twisted.internet import defer
-
-import collections
-import logging
-import itertools
-
-from six import itervalues, iteritems
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/typing.py b/synapse/handlers/typing.py
index 5d9736e88f..2d2d3d5a0d 100644
--- a/synapse/handlers/typing.py
+++ b/synapse/handlers/typing.py
@@ -13,17 +13,16 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import logging
+from collections import namedtuple
+
from twisted.internet import defer
-from synapse.api.errors import SynapseError, AuthError
+from synapse.api.errors import AuthError, SynapseError
+from synapse.types import UserID, get_domain_from_id
from synapse.util.logcontext import run_in_background
from synapse.util.metrics import Measure
from synapse.util.wheel_timer import WheelTimer
-from synapse.types import UserID, get_domain_from_id
-
-import logging
-
-from collections import namedtuple
logger = logging.getLogger(__name__)
diff --git a/synapse/handlers/user_directory.py b/synapse/handlers/user_directory.py
index 7e4a114d4f..37dda64587 100644
--- a/synapse/handlers/user_directory.py
+++ b/synapse/handlers/user_directory.py
@@ -14,14 +14,15 @@
# limitations under the License.
import logging
+
+from six import iteritems
+
from twisted.internet import defer
from synapse.api.constants import EventTypes, JoinRules, Membership
from synapse.storage.roommember import ProfileInfo
-from synapse.util.metrics import Measure
from synapse.types import get_localpart_from_id
-
-from six import iteritems
+from synapse.util.metrics import Measure
logger = logging.getLogger(__name__)
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