send-or-next.py

import inspect
from random import random


def foo_iterator():

    while True:
        caller_frame = inspect.currentframe().f_back
        frame_info = inspect.getframeinfo(caller_frame)
        if '.send(' in frame_info.code_context[0]:
            yield f'.send()'
        else:
            yield ' next()'


def bar_randomizer(repetitions):
    iterator = foo_iterator()

    # Calling .send() before the first iteration will result in a
    # TypeError exception
    next(iterator)

    for x in range(repetitions):
        # Randomly call either iterator.send(x) or next(iterator)
        if random() > 0.5:
            y = iterator.send(x)
        else:
            y = next(iterator)
        print(y)

    print(f'Looped for {repetitions} repetitions.')
    



if __name__ == '__main__':
    bar_randomizer(15)

oh yes you gave me an idea.