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-rw-r--r--synapse/util/async.py6
-rw-r--r--synapse/util/stringutils.py5
-rw-r--r--synapse/util/wheel_timer.py4
3 files changed, 10 insertions, 5 deletions
diff --git a/synapse/util/async.py b/synapse/util/async.py
index 1df5c5600c..cb53c31123 100644
--- a/synapse/util/async.py
+++ b/synapse/util/async.py
@@ -27,6 +27,8 @@ from contextlib import contextmanager
 
 import logging
 
+from six.moves import range
+
 logger = logging.getLogger(__name__)
 
 
@@ -158,13 +160,13 @@ def concurrently_execute(func, args, limit):
     def _concurrently_execute_inner():
         try:
             while True:
-                yield func(it.next())
+                yield func(next(it))
         except StopIteration:
             pass
 
     return logcontext.make_deferred_yieldable(defer.gatherResults([
         preserve_fn(_concurrently_execute_inner)()
-        for _ in xrange(limit)
+        for _ in range(limit)
     ], consumeErrors=True)).addErrback(unwrapFirstError)
 
 
diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py
index 95a6168e16..b98b9dc6e4 100644
--- a/synapse/util/stringutils.py
+++ b/synapse/util/stringutils.py
@@ -15,6 +15,7 @@
 
 import random
 import string
+from six.moves import range
 
 _string_with_symbols = (
     string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
@@ -22,12 +23,12 @@ _string_with_symbols = (
 
 
 def random_string(length):
-    return ''.join(random.choice(string.ascii_letters) for _ in xrange(length))
+    return ''.join(random.choice(string.ascii_letters) for _ in range(length))
 
 
 def random_string_with_symbols(length):
     return ''.join(
-        random.choice(_string_with_symbols) for _ in xrange(length)
+        random.choice(_string_with_symbols) for _ in range(length)
     )
 
 
diff --git a/synapse/util/wheel_timer.py b/synapse/util/wheel_timer.py
index b70f9a6b0a..7a9e45aca9 100644
--- a/synapse/util/wheel_timer.py
+++ b/synapse/util/wheel_timer.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from six.moves import range
+
 
 class _Entry(object):
     __slots__ = ["end_key", "queue"]
@@ -68,7 +70,7 @@ class WheelTimer(object):
         # Add empty entries between the end of the current list and when we want
         # to insert. This ensures there are no gaps.
         self.entries.extend(
-            _Entry(key) for key in xrange(last_key, then_key + 1)
+            _Entry(key) for key in range(last_key, then_key + 1)
         )
 
         self.entries[-1].queue.append(obj)