diff -r c02818d7e29f -r 7e61baa047f0 svgui/pyjs/lib/sys.py
--- a/svgui/pyjs/lib/sys.py	Mon Aug 14 22:30:41 2017 +0300
+++ b/svgui/pyjs/lib/sys.py	Mon Aug 14 23:27:15 2017 +0300
@@ -11,22 +11,27 @@
 
 appname = None
 
+
 def setloadpath(lp):
     global loadpath
     loadpath = lp
 
+
 def setappname(an):
     global appname
     appname = an
 
+
 def getloadpath():
     global loadpath
     return loadpath
 
+
 def addoverride(module_name, path):
     global overrides
     overrides[module_name] = path
 
+
 def addstack(linedebug):
     JS("""
         if (pyjslib.bool((sys.stacktrace === null))) {
@@ -34,11 +39,14 @@
         }
         sys.stacktrace.append(linedebug);
     """)
+
+
 def popstack():
     JS("""
         sys.stacktrace.pop()
     """)
 
+
 def printstack():
     JS("""
         var res = '';