diff --git a/vcr/cassette.py b/vcr/cassette.py
index b68209d..7b6f8a2 100644
--- a/vcr/cassette.py
+++ b/vcr/cassette.py
@@ -77,7 +77,8 @@ class Cassette(ContextDecorator):
         # The cassette doesn't contain the request asked for.
         raise UnhandledHTTPRequestError(
             "The cassette (%r) doesn't contain the request (%r) asked for"
-                % (self._path,request))
+            % (self._path, request)
+        )
 
     def responses_of(self, request):
         '''
@@ -94,7 +95,8 @@ class Cassette(ContextDecorator):
         # The cassette doesn't contain the request asked for.
         raise UnhandledHTTPRequestError(
             "The cassette (%r) doesn't contain the request (%r) asked for"
-                % (self._path,request))
+            % (self._path, request)
+        )
 
     def _as_dict(self):
         return {"requests": self.requests, "responses": self.responses}
diff --git a/vcr/stubs/__init__.py b/vcr/stubs/__init__.py
index 1404f85..170efdc 100644
--- a/vcr/stubs/__init__.py
+++ b/vcr/stubs/__init__.py
@@ -176,7 +176,7 @@ class VCRConnectionMixin:
                 raise CannotOverwriteExistingCassetteException(
                     "Can't overwrite existing cassette (%r) in "
                     "your current record mode (%r)."
-                        % (self.cassette._path, self.cassette.record_mode)
+                    % (self.cassette._path, self.cassette.record_mode)
                 )
 
             # Otherwise, we should send the request, then get the response