os.py 文件源码

def forkpty_and_watch(callback=None, loop=None, ref=False, forkpty=forkpty_gevent):
                """
                Like :func:`fork_and_watch`, except using :func:`forkpty_gevent`.

                Availability: Some Unix systems.

                .. versionadded:: 1.1b5
                """
                result = []

                def _fork():
                    pid_and_fd = forkpty()
                    result.append(pid_and_fd)
                    return pid_and_fd[0]
                fork_and_watch(callback, loop, ref, _fork)
                return result[0]