normalize whitespace

Lib/xml/etree/ElementTree.py

@@ -1382,12 +1382,10 @@ class TreeBuilder:
                     self._last.text = text
             self._data = []
 
-
     def data(self, data):
         """Add text to current element."""
         self._data.append(data)
 
-
     def start(self, tag, attrs):
         """Open new element and return it.
 
@@ -1403,7 +1401,6 @@ class TreeBuilder:
         self._tail = 0
         return elem
 
-
     def end(self, tag):
         """Close and return current Element.
 
@@ -1681,4 +1678,3 @@ try:
                     source.close()
 except ImportError:
     pass
-