diff --git a/locust/clients.py b/locust/clients.py
index c4f3d385bc..db47b74ea7 100644
--- a/locust/clients.py
+++ b/locust/clients.py
@@ -132,7 +132,7 @@ def request(self, method, url, name=None, catch_response=False, context={}, **kw
 
         # use stream=True to avoid closing socket and downloading content at the beginning
         # we'll download content if actually requested a bit later
-        # 
+        #
         # a bit of a hack to actually estimate fetching time
         stream = kwargs.pop("stream", False)
 
diff --git a/locust/test/test_fasthttp.py b/locust/test/test_fasthttp.py
index c379083156..aaf9f71720 100644
--- a/locust/test/test_fasthttp.py
+++ b/locust/test/test_fasthttp.py
@@ -76,8 +76,10 @@ def test_response_times_are_separated_in_request_metadata(self):
         in request metadata
         """
         kwargs = {}
+
         def on_request(**kw):
             kwargs.update(kw)
+
         self.environment.events.request.add_listener(on_request)
         s = self.get_client()
 
@@ -88,7 +90,9 @@ def on_request(**kw):
         self.assertLess(kwargs["response_fetching_time"], 10)
         self.assertAlmostEqual(
             self.runner.stats.get("/streaming/50", method="GET").avg_response_time,
-            kwargs["response_waiting_time"] + kwargs["response_fetching_time"], delta=0.1)
+            kwargs["response_waiting_time"] + kwargs["response_fetching_time"],
+            delta=0.1,
+        )
         self.runner.stats.clear_all()
         kwargs.clear()
 
@@ -99,7 +103,9 @@ def on_request(**kw):
         self.assertGreater(kwargs["response_fetching_time"], 250)
         self.assertAlmostEqual(
             self.runner.stats.get("/streaming/50", method="GET").avg_response_time,
-            kwargs["response_waiting_time"] + kwargs["response_fetching_time"], delta=0.1)
+            kwargs["response_waiting_time"] + kwargs["response_fetching_time"],
+            delta=0.1,
+        )
 
     def test_slow_redirect(self):
         s = self.get_client()
diff --git a/locust/test/test_http.py b/locust/test/test_http.py
index 47d3e471d0..b473df7bf1 100644
--- a/locust/test/test_http.py
+++ b/locust/test/test_http.py
@@ -67,8 +67,10 @@ def test_response_times_are_separated_in_request_metadata(self):
         in request metadata
         """
         kwargs = {}
+
         def on_request(**kw):
             kwargs.update(kw)
+
         self.environment.events.request.add_listener(on_request)
         s = self.get_client()
 
@@ -79,7 +81,9 @@ def on_request(**kw):
         self.assertLess(kwargs["response_fetching_time"], 10)
         self.assertAlmostEqual(
             self.runner.stats.get("/streaming/50", method="GET").avg_response_time,
-            kwargs["response_waiting_time"] + kwargs["response_fetching_time"], delta=0.1)
+            kwargs["response_waiting_time"] + kwargs["response_fetching_time"],
+            delta=0.1,
+        )
         self.runner.stats.clear_all()
         kwargs.clear()
 
@@ -90,8 +94,9 @@ def on_request(**kw):
         self.assertGreater(kwargs["response_fetching_time"], 250)
         self.assertAlmostEqual(
             self.runner.stats.get("/streaming/50", method="GET").avg_response_time,
-            kwargs["response_waiting_time"] + kwargs["response_fetching_time"], delta=0.1)
-
+            kwargs["response_waiting_time"] + kwargs["response_fetching_time"],
+            delta=0.1,
+        )
 
     def test_slow_redirect(self):
         s = self.get_client()