Real-time calculation of mean values with coroutines

--Coroutines are functions that can be stopped and restarted --Stop at yield --Send the value to the return value of yield and restart

average.py

#!/usr/bin/python                                                                                                                                                                                                  

def average():
    total = 0.0
    count = 0.0
    average = 0.0
    while True:
        #Coroutine points
        # -Generate average with yield and stop function
        # -When a value is received from send, it is assigned to value and the function restarts.
        value = yield average 
        total += value
        count += 1.0
        average = total/count

avg = average()
avg.next()
print avg.send(10.0)
print avg.send(20.0)
print avg.send(30.0)

--Result

10.0
15.0
20.0