超时跳过、接收子线程结果

超时跳过、接收子线程结果

方式一：eventlet 模块 缺点：针对子进程无法跳出

import time, eventlet

eventlet.monkey_patch()
with eventlet.Timeout(3, False):
    time.sleep(4)   # 可能超时的代码块
    print('没有跳过')

方式二：

def demo():
    time.sleep(3)   # 可能超时的代码块
    return time.time()

class MyThread(threading.Thread):

    def __init__(self, func, args=()):
        super(MyThread, self).__init__()
        self.func = func
        self.args = args

    def run(self):
        self.result = self.func(*self.args)

    def get_result(self):
        try:
            return self.result
        except Exception:
            return None

t = MyThread(demo, ())
t.setDaemon(True)
t.start()
t.join(timeout=5)
x = t.get_result()
print(x)

与机器交互，获取结果

while True:
    for i in range(3):
        try:
            time.sleep(3)        # 接收数据
            break_flag = False
            break
        except:
            break_flag = True
            print('接收阻塞，可能已经完成')
            
    if break_flag:   # 判定结果接收完毕，退出循环
        break