--- a/py_ext/py_ext.py	Tue Aug 15 12:17:51 2017 +0300
+++ b/py_ext/py_ext.py	Tue Aug 15 15:50:30 2017 +0300
@@ -51,7 +51,7 @@
             "python_eval_fb_count": python_eval_fb_count }
 
         Gen_Pythonfile_path = os.path.join(buildpath, "py_ext.c")
-        pythonfile = open(Gen_Pythonfile_path,'w')
+        pythonfile = open(Gen_Pythonfile_path, 'w')
         pythonfile.write(plc_python_code)
         pythonfile.close()