Empty class state before setting it.

See Zope 2.11 DateTime.__setstate__ (also present in 2.12).


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43935 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/DateTimePatch.py

@@ -35,6 +35,7 @@ SyntaxError, DateError, TimeError, localtime, time
 STATE_KEY = 'str'
 
 def DateTime__setstate__(self, state):
+  self.__dict__.clear()
   if isinstance(state, tuple):
     t, tz = state
     ms = (t - math.floor(t))