def increment(self, counter_name, delta):
    current_value = self.counters.get(counter_name, 0)
    new_value = current_value + delta
    self.counters[counter_name] = new_value
    return new_value
Increment counter value.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/model.py/CountersMap.increment