import time

global_i = 0


def b(info):
    a(only_print=True)
    if info["global"] < 0:
        raise ValueError(str(info))


def a(only_print):
    global global_i
    original_i = global_i
    if not only_print:
        global_i += 1
        b(info={"original": original_i, "global": global_i})
    print(f"{global_i=} {original_i=} {only_print=}")


while True:
    time.sleep(0.4)
    a(only_print=False)
    # if global_i == 10: breakpoint() # toto na tomto řádku se pustí debuger