--- a/py_ext/py_ext.py	Wed Aug 16 11:47:27 2017 +0300
+++ b/py_ext/py_ext.py	Wed Aug 16 12:03:46 2017 +0300
@@ -48,7 +48,7 @@
 
         # prepare python code
         plc_python_code = plc_python_code % {
-            "python_eval_fb_count": python_eval_fb_count }
+            "python_eval_fb_count": python_eval_fb_count}
 
         Gen_Pythonfile_path = os.path.join(buildpath, "py_ext.c")
         pythonfile = open(Gen_Pythonfile_path, 'w')