‘They used to be things that people would whisper to me in the chamber, designed to shut down my confidence ... they’re now just shouted across the chamber.’ Greens senator Sarah Hanson-Young speaks to political editor Katharine Murphy about being a woman in politics. She says sexist attacks in parliament are getting worse and only a code of conduct with consequences will change the situation • Hanson-Young says parliament needs women’s caucus that cuts across party lines