import threading
import time
import random

def tareaUno():
  global Done
  time.sleep (random.random())
  if not Done:
    print("Tarea realizada")
    time.sleep(0.1)
    Done = True
  else :
    print ("tarea NO REALIZADA")
    time.sleep(0.01)
  return

def tareaDos():
  global Done
  Done = False
  print("Desactivo")

hilos1 = list()
for i in range(50):
  t = threading.Thread(target=tareaUno)
  hilos1.append(t)
  t.start()

Done = False
tareaUno()

hilos2 = list()
for i in range(5):
  t2 = threading.Thread(target=tareaDos)
  hilos2.append(t2)
  t2.start()
  time.sleep(1)
  
time.sleep(6)