到目前为止，我想出的解决方案使用SubprocessProtocol来接收子进程的输出，并使用关联的传输来获取该进程的退出代码。我不知道这是否是最佳选择。我的方法基于JF
Sebastian对类似问题的回答。
import asyncioimport contextlibimport osimport localeclass SubprocessProtocol(asyncio.SubprocessProtocol): def pipe_data_received(self, fd, data): if fd == 1: name = 'stdout' elif fd == 2: name = 'stderr' text = data.depre(locale.getpreferredencoding(False)) print('Received from {}: {}'.format(name, text.strip())) def process_exited(self): loop.stop()if os.name == 'nt': # On Windows, the ProactorEventLoop is necessary to listen on pipes loop = asyncio.ProactorEventLoop() asyncio.set_event_loop(loop)else: loop = asyncio.get_event_loop()with contextlib.closing(loop): # This will only connect to the process transport = loop.run_until_complete(loop.subprocess_exec( SubprocessProtocol, 'python', '-c', 'print('Hello async world!')'))[0] # Wait until process has finished loop.run_forever() print('Program exited with: {}'.format(transport.get_returnpre()))
