fixed unknown variable "context" on erp5 python script

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39495 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/PythonScript.py

@@ -88,6 +88,14 @@ class PythonScript(XMLObject, ZopePythonScript):
                       , PropertySheet.PythonScript
                       )
 
+    def __init__(self, *args, **kw):
+      """
+      override to call __init__ of python scripts in order to set
+      correctly bindings
+      """
+      XMLObject.__init__(self, *args, **kw)
+      ZopePythonScript.__init__(self, *args, **kw)
+    
     def _setBody(self, value):
       """
       override to call ZopePythonScript methods to initialize code