Just tried this out, and it's not as flexible as I would like. For example, !python <search> doesn't work. You'd need to use !python:<search>. It also seems

Just tried this out, and it's not as flexible as I would like. For example, !python <search> doesn't work. You'd need to use !python:<search>. It also seems to require that you have no space between the keyword, colon, and search phrase. Still, a minor annoyance.