diff -r c3c3d1318130 -r 69dfdb26f600 py_ext/PythonFileCTNMixin.py
--- a/py_ext/PythonFileCTNMixin.py	Tue Aug 15 17:01:51 2017 +0300
+++ b/py_ext/PythonFileCTNMixin.py	Tue Aug 15 22:38:43 2017 +0300
@@ -243,7 +243,7 @@
                              varpubfmt) % varinfo
                             for varinfo in varinfos])
         varinit = "\n".join([varinitonchangefmt % dict(
-                                onchangelen = len(varinfo["onchangecode"]), **varinfo)
+                                onchangelen=len(varinfo["onchangecode"]), **varinfo)
                             for varinfo in varinfos if varinfo["onchange"]])
 
         # TODO : use config name obtained from model instead of default