python - 如何在 python 中自动回答"is"？

Question

假设我有一个运行 apt update -y 的脚本，稍后我需要针对不同的软件包手动回答这些问题。我怎样才能自动做到这一点？

设置 virtualbox-guest-x11 (5.0.32-dfsg-0ubuntu1.16.04.2) ...

Configuration file '/etc/X11/Xsession.d/98vboxadd-xclient'
 ==> File on system created by you or by a script.
 ==> File also in package provided by package maintainer.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** 98vboxadd-xclient (Y/I/N/O/D/Z) [default=N] ?  conffile prompt detected: /etc/X11/Xsession.d/98vboxadd-xclient /etc/X11/Xsession.d/98vboxadd-xclient.dpkg-new

我的脚本能够检测配置提示，但我应该如何自动回答"is"？

通过使用 python-apt api，我可以通过此函数检测提示

def conffile(self, current, new):
    print " conffile prompt detected: %s %s" % (current, new)

    """(Abstract) Called when a conffile question from dpkg is detected."""

Answer 1

使用yes命令:

yes Y | apt ...