import radio
import random
from microbit import *

active_alert = False
recieved_good = [Image.YES]

radio.on()

while True:
    if button_a.was_pressed():
        active_alert = True
        radio.send("alert")
    if button_b.was_pressed():
        active_alert = False
    if active_alert:
        incoming = radio.receive()
        if incoming is not None and "student_" in incoming:
            with open('students_info.txt', 'w') as students:
                students.write(incoming)