max coroutine

max_coroutine.py

#!/usr/bin/env python3
def max_coroutine(initial_value):
    max_value = initial_value
    while True:
        next_value = (yield max_value)
        max_value = max(next_value, max_value)

def main():
    L = [1, 2, 0, 7, 5, 9, 13, 10, 8]
    src_it = iter(L)

    my_max_co = max_coroutine(next(src_it))
    print("Initial maximum value: {0}".format(next(my_max_co)))
    for i in src_it:
        print("Maximum value after appending {0}: {1}".format(
                                              i, my_max_co.send(i)))

if __name__ == '__main__':
    main()