Method wait

Lib/subprocess.py:1327–1348

Wait for child process to terminate; returns self.returncode.

(self, timeout=None)

    def wait(self, timeout=None):
        """Wait for child process to terminate; returns self.returncode."""
        if timeout is not None:
            endtime = _time() + timeout
        try:
            return self._wait(timeout=timeout)
        except KeyboardInterrupt:
            # https://bugs.python.org/issue25942
            # The first keyboard interrupt waits briefly for the child to
            # exit under the common assumption that it also received the ^C
            # generated SIGINT and will exit rapidly.
            if timeout is not None:
                sigint_timeout = min(self._sigint_wait_secs,
                                     self._remaining_time(endtime))
            else:
                sigint_timeout = self._sigint_wait_secs
            self._sigint_wait_secs = 0  # nothing else should wait.
            try:
                self._wait(timeout=sigint_timeout)
            except TimeoutExpired:
                pass
            raise  # resume the KeyboardInterrupt

    def _close_pipe_fds(self,
                        p2cread, p2cwrite,