__init__.py 文件源码

def _build_usage(self, command):
        rst_doc = gen_rst_doc(command)
        man_doc = publish_string(rst_doc, writer=manpage.Writer())
        cmdline = ['groff', '-m', 'man', '-T', 'ascii']
        p = Popen(cmdline, stdin=PIPE, stdout=PIPE, stderr=PIPE)
        usage = p.communicate(input=man_doc)[0]
        return usage