zoukankan      html  css  js  c++  java
  • gevent的同步与异步

    from gevent import spawn,joinall,monkey;monkey.patch_all()
    import time
    def task(pid):
        time.sleep(0.5)
        print('Task %s done' % pid)
    
    def synchronous():     #普通
        for i in range(10):
            task(i)
    
    def asynchronous():
        g_l=[spawn(task,i) for i in range(10)]      #协程
        joinall(g_l)
    
    if __name__ == '__main__':
        start = time.time()
        print('Synchronous:')
        synchronous()
        print('普通',time.time() - start)
    
        start_vip = time.time()
        print('Asynchronous:')
        asynchronous()
        print('vip:::',time.time() - start_vip)     #速度可以快十倍
    

     异步执行比同步执行根据任务量可以快数倍乃至n倍

  • 相关阅读:
    Python模块笔记
    js日期
    js字符串
    js數字
    js對象構造
    js 錯誤
    js break和continue
    js條件結構和循環結構
    js運算符
    js函數
  • 原文地址:https://www.cnblogs.com/52-qq/p/7459148.html
Copyright © 2011-2022 走看看