Merge branch 'master' into python3

[wrw.git] / wrw / sp / cons.py

diff --git a/wrw/sp/cons.py b/wrw/sp/cons.py
index 74a6ea6..205de03 100644 (file)
--- a/wrw/sp/cons.py
+++ b/wrw/sp/cons.py
@@ -59,10 +59,11 @@ class context(object):
         node.children.append(self.nodefrom(child))
 
     def addattr(self, node, k, v):
-        node.attrs[str(k)] = str(v)
+        if v is not None:
+            node.attrs[str(k)] = str(v)
 
 class constructor(object):
-    def __init__(self, ns, elcls = element, ctx=None):
+    def __init__(self, ns, elcls=element, ctx=None):
         self._ns = ns
         self._elcls = elcls
         if ctx is None: ctx = context()