common.py 文件源码

def start(self):
        """Start a subprocess

        This method makes python actually spawn the subprocess and wait for it
        to finish initializing.
        """
        self._start_subprocess()

        self._register_stdout_stderr_to_logcatcher()

        if not self._wait_for_subprocess_to_finish_init():
            self.stop()
            pytest.exit("Failed to start `{}` process".format(self.id))