How to use the asciinema.term.read_blocking function in asciinema

if 0x03 in data:  # ctrl-c
                            ctrl_c = True
                            break

                        if 0x20 in data:  # space
                            paused = False
                            base_time = base_time + (time.time() - pause_time)
                            break

                        if 0x2e in data:  # period (dot)
                            delay = 0
                            pause_time = time.time()
                            base_time = pause_time - t
                            break
                else:
                    data = read_blocking(stdin.fileno(), delay)

                    if not data:
                        break

                    if 0x03 in data:  # ctrl-c
                        ctrl_c = True
                        break

                    if 0x20 in data:  # space
                        paused = True
                        pause_time = time.time()
                        slept = t - (pause_time - base_time)
                        delay = delay - slept

            if ctrl_c:
                break

stdout = ev.cap_relative_time(stdout, idle_time_limit)
        stdout = ev.to_absolute_time(stdout)
        stdout = ev.adjust_speed(stdout, speed)

        base_time = time.time()
        ctrl_c = False
        paused = False
        pause_time = None

        for t, _type, text in stdout:
            delay = t - (time.time() - base_time)

            while stdin and not ctrl_c and delay > 0:
                if paused:
                    while True:
                        data = read_blocking(stdin.fileno(), 1000)

                        if 0x03 in data:  # ctrl-c
                            ctrl_c = True
                            break

                        if 0x20 in data:  # space
                            paused = False
                            base_time = base_time + (time.time() - pause_time)
                            break

                        if 0x2e in data:  # period (dot)
                            delay = 0
                            pause_time = time.time()
                            base_time = pause_time - t
                            break
                else: