app.js is dead when trying to run following in python

[varnar]

flag = 1
while (flag): 
    print  ('Given flag is really true!')
print "Done"

And error:

ATTEMPTING TO REMOVE: temp/2fe6cc4c7772de1a7581

buffer.js:385
throw new Error('toString failed');
^

Error: toString failed
at Buffer.toString (buffer.js:385:11)
at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:378:21)

[varnar]

but this is working

flag = 1
while (flag): 
   print ('Given flag is really true!')
   flag = 0