form.py 文件源码

def render(self):
        attrs = self.attrs.copy()
        attrs['name'] = self.name

        x = '<select %s>\n' % attrs

        for label, options in self.args:
            x += '  <optgroup label="%s">\n' % net.websafe(label)
            for arg in options:
                x += self._render_option(arg, indent = '    ')
            x +=  '  </optgroup>\n'

        x += '</select>\n'
        return x