from threading import Thread, Lock


# 由_acquire解鎖執(zhí)行后釋放_(tái)release鎖
def _print(_id: str, _acquire: Lock, _release: Lock) -> None:
  for i in range(10):
    _acquire.acquire()
    print(f"id:{_id}")
    _release.release()


if __name__ == '__main__':
  # 創(chuàng)建三個(gè)鎖供3個(gè)線程使用
  mutex1 = Lock()
  mutex2 = Lock()
  mutex3 = Lock()
  # 定義三個(gè)線程A、B、C
  # 線程A需要mutex1解鎖執(zhí)行后釋放mutex2
  # 線程B需要mutex2解鎖執(zhí)行后釋放mutex3
  # 線程C需要mutex3解鎖執(zhí)行后釋放mutex1
  # 元組中第一位是自定義的線程ID，第二位是解鎖需要的鎖，第三位是釋放的鎖
  threads = [Thread(target=_print, args=[i[0], i[1], i[2]]) for i in
        [('A', mutex1, mutex2), ('B', mutex2, mutex3), ('C', mutex3, mutex1)]]
  # 把mutex2和mutex3這兩把鎖先用了以便阻塞線程2和線程3的執(zhí)行
  mutex2.acquire()
  mutex3.acquire()
  # 接下來(lái)只有線程A可以先執(zhí)行是因?yàn)閙utex1并沒(méi)有被占用
  # 線程B和線程C需要分別等待著鎖2和鎖3的釋放才能繼續(xù)執(zhí)行
  [thr.start() for thr in threads]
  [thr.join() for thr in threads]

#coding=utf-8
import threading
import time

class MyThread(threading.Thread):
  def run(self):
    for i in range(3):
      time.sleep(1)
      msg = "I'm "+self.name+' @ '+str(i) #name屬性中保存的是當(dāng)前線程的名字
      print(msg)


if __name__ == '__main__':
  t = MyThread()
  t.start()

#coding=utf-8
import threading
import time

class MyThread(threading.Thread):
  def run(self):
    for i in range(3):
      time.sleep(1)
      msg = "I'm "+self.name+' @ '+str(i)
      print(msg)
def test():
  for i in range(5):
    t = MyThread()
    t.start()
if __name__ == '__main__':
  test()

  I'm Thread-1 @ 0
  I'm Thread-2 @ 0
  I'm Thread-5 @ 0
  I'm Thread-3 @ 0
  I'm Thread-4 @ 0
  I'm Thread-3 @ 1
  I'm Thread-4 @ 1
  I'm Thread-5 @ 1
  I'm Thread-1 @ 1
  I'm Thread-2 @ 1
  I'm Thread-4 @ 2
  I'm Thread-5 @ 2
  I'm Thread-2 @ 2
  I'm Thread-1 @ 2
  I'm Thread-3 @ 2