def fetchAndSaveData(): global time_last try: datacollector = DataCollector() time_now = getTime() data = datacollector.getCarsData() oldDataFile = getFileName(time_last) print time_last if(os.path.exists(oldDataFile)): missingData = datacollector.getMissingCars(data,oldDataFile) for missingEntry in missingData: try: db.add_entry(Cars(missingEntry, time_now)) except: print 'Booking=========================================================================================' traceback.print_exc() print missingEntry releasedData = datacollector.getReleasedCars(data,oldDataFile) for releasedEntry in releasedData: try: db.updateEntry(releasedEntry, time_now) except: print '=========================================================================================' print("Unexpected error:", sys.exc_info()[0]) traceback.print_exc() print releasedEntry datacollector.writeToFile(data, getFileName(time_now)) time_last = time_now except: print 'exception', sys.exc_info()[0] traceback.print_exc()