Throw more useful error when incorrect treebulder name is passed

jgraham · jgraham · commit bb0e7b48d184 · 2010-03-12T23:13:07.000+01:00
diff --git a/src/html5lib/treebuilders/__init__.py b/src/html5lib/treebuilders/__init__.py
@@ -87,6 +87,8 @@ def getTreeBuilder(treeType, implementation=None, **kwargs):
                             import elementtree.ElementTree as ET
                 implementation = ET
             import etree
-            # XXX: NEVER cache here, caching is done in the etree submodule
+            # NEVER cache here, caching is done in the etree submodule
             return etree.getETreeModule(implementation, **kwargs).TreeBuilder
+        else:
+            raise ValueError("""Unrecognised treebuilder "%s" """%treeType)
     return treeBuilderCache.get(treeType)
