def get(self):
reports = TrafficReport.query().fetch()
result = '{"reports":['
for r in reports:
age = ((datetime.now() - r.report_date).seconds / 600)
if age == 0:
age = 1
computed_weight = r.weight / age
result += "{" + "\"latitude\": {0}, \"longitude\": {1}, \"report_date\": \"{2}\", \"weight\": {3}".format(r.latitude, r.longitude, r.report_date.strftime("%d.%m.%Y %H:%M"), computed_weight) + "},"
result += ']}'
self.response.out.write(result.replace("},]", "}]"))
