Python异步编程Async/Awai

• 2020 年 1 月 9 日
• 筆記

python 从3.5开始从语言层面提供了新的异步编程语法。

import asyncio      async def hello():      print("hello the world")      r = await asyncio.sleep(1)      print("hello again")    def main():      loop = asyncio.get_event_loop()      """      tasks = [          asyncio.ensure_future(hello()),      ]      loop.run_until_complete(asyncio.wait(tasks))      """      print("begin")      loop.run_until_complete(hello())      print("end")      loop.close()        print("program is finished.")      if __name__ == "__main__":      main()