Remove items from __all__ that aren't in the namespace

Author: willkg

html5lib/treewalkers/__init__.py

@@ -13,7 +13,7 @@
 from .. import constants
 from .._utils import default_etree
 
-__all__ = ["getTreeWalker", "pprint", "dom", "etree", "genshi", "etree_lxml"]
+__all__ = ["getTreeWalker", "pprint"]
 
 treeWalkerCache = {}