py2/py3: make HBTreeFolder2 code compatible.

5fb87768 · Kazuhiko Shiozaki · dda8307e · 5fb87768
Commit 5fb87768 authored Oct 05, 2022 by Kazuhiko Shiozaki
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product/HBTreeFolder2/HBTreeFolder2.py product/HBTreeFolder2/HBTreeFolder2.py +4 -1

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--- a/product/HBTreeFolder2/HBTreeFolder2.py
+++ b/product/HBTreeFolder2/HBTreeFolder2.py
@@ -423,7 +423,10 @@ class HBTreeFolder2Base (Persistent):
                    s.append((k, six.iteritems(v)))
                break
              s.append((k, six.iteritems(v)))
-        r.sort()
+        if six.PY2:
+          r.sort()
+        else:
+          r.sort(key=lambda e: '' if e is None else e)
        return r

    security.declareProtected(access_contents_information,