normalize whitespace
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py
index c88700e..9746934 100644
--- a/Lib/test/test_xml_etree.py
+++ b/Lib/test/test_xml_etree.py
@@ -27,7 +27,7 @@
 from test.support import TESTFN, findfile, unlink, import_fresh_module, gc_collect
 
 # pyET is the pure-Python implementation.
-# 
+#
 # ET is pyET in test_xml_etree and is the C accelerated version in
 # test_xml_etree_c.
 pyET = None