- issue2550933 - Fix Traceback in cgi/templating.py when a string is

  passed to PasswordHTMLProperty::plain. (John Rouillard)

This is a more pythonic patch than presented in the issue. Try the
original code and if it fails take alternative action.

Author: rouilj

CHANGES.txt

@@ -349,7 +349,8 @@ Fixed:
 - Fix Traceback in backends/portalocker.py on windows due to missing
   windll import, thanks to Heiko Stegmann for suggesting a first fix.
   (Ralf Schlatterbeck)
-  
+- issue2550933 - Fix Traceback in cgi/templating.py when a string is
+  passed to PasswordHTMLProperty::plain. (John Rouillard)
 
 2016-01-11: 1.5.1
 

roundup/cgi/templating.py

@@ -1554,7 +1554,10 @@ def plain(self, escape=0):
 
         if self._value is None:
             return ''
-        value = self._value.dummystr()
+        try:
+            value = self._value.dummystr()
+        except AttributeError:
+            value = self._('[hidden]')
         if escape:
             value = cgi.escape(value)
         return value