selector_builder.py 文件源码

def _build_wd_selector(self, selectors):
        if any(isinstance(val, re._pattern_type) for val in selectors.values()):
            return None

        if not selectors.pop('tag_name', None):
            raise Error('internal error: no tag_name?!')

        button_attr_exp = self.xpath_builder.attribute_expression('button', selectors)

        xpath = './/button'
        if button_attr_exp:
            xpath += '[{}]'.format(button_attr_exp)

        if selectors.get('type') is not False:
            if selectors.get('type') in [None, True]:
                selectors['type'] = Button.VALID_TYPES
            input_attr_exp = self.xpath_builder.attribute_expression('input', selectors)

            xpath += ' | .//input'
            xpath += '[{}]'.format(input_attr_exp)

        logging.debug({'build_wd_selector': xpath})

        return ['xpath', xpath]