sandbox.py 文件源码

def pause(self):
        """Pause the process by sending a SIGSTOP to the child

        A limitation of the method is it will only pause the initial
        child process created any further (grandchild) processes created
        will not be paused.

        This method is a no-op on Windows.
        """
        try:
            self.command_process.send_signal(signal.SIGSTOP)
        except (ValueError, AttributeError, OSError):
            pass