diff --git a/datasette/utils/__init__.py b/datasette/utils/__init__.py
index bdeb6e5a..6eefc2dc 100644
--- a/datasette/utils/__init__.py
+++ b/datasette/utils/__init__.py
@@ -878,7 +878,7 @@ class LoadExtension(click.ParamType):
             path_entry = value.split(":", 2)
             if len(path_entry) < 3:
                 return value
-            #argument contains a Windows/DOS path and an entry point
+            # argument contains a Windows/DOS path and an entry point
             path = path_entry[0] + ":" + path_entry[1]
             entrypoint = path_entry[-1]
             return path, entrypoint
diff --git a/tests/test_loadextension.py b/tests/test_loadextension.py
index c5b3fca4..3ceb372e 100644
--- a/tests/test_loadextension.py
+++ b/tests/test_loadextension.py
@@ -1,28 +1,31 @@
 from datasette.utils import LoadExtension
 
+
 def test_dos_path():
     path_string = "C:\Windows\System32\mod_spatialite.dll"
     le = LoadExtension()
     path = le.convert(path_string, None, None)
     assert path == "C:\Windows\System32\mod_spatialite.dll"
-    
+
+
 def test_dos_pathentry():
     path_entry = "C:\Windows\System32\mod_spatialite.dll:testentry"
     le = LoadExtension()
     pathen, entry = le.convert(path_entry, None, None)
     assert pathen == "C:\Windows\System32\mod_spatialite.dll"
     assert entry == "testentry"
-    
+
+
 def test_linux_path():
     path_string = "/base/test/test2"
     le = LoadExtension()
     path = le.convert(path_string, None, None)
     assert path == path_string
 
+
 def test_linux_path_entry():
     path_string = "/base/test/test2:testentry"
     le = LoadExtension()
     path, entry = le.convert(path_string, None, None)
     assert path == "/base/test/test2"
     assert entry == "testentry"
-    
\ No newline at end of file