Fix style errors

test/02_test/test/spam_test.py

@@ -17,7 +17,7 @@ def path_contains(parent, child):
 
     while child != os.path.dirname(child):
         child = os.path.dirname(child)
-        if os.stat(parent) ==  os.stat(child): 
+        if os.stat(parent) == os.stat(child):
             # parent and child refer to the same directory on the filesystem
             return True
     return False