WebRunner.py 文件源码

def find_element(self, selector):
        '''
        Finds an element by CSS/XPATH selector.

        Parameters
        ----------
        selector: str
            A CSS/XPATH selector to search for. This can be any valid CSS/XPATH selector.

        Returns
        -------
        selenium.webdriver.remote.webelement.WebElement or None
            Returns an element or nothing at all

        '''
        elem = None
        try:
            if selector.startswith('/'):
                elem = self.browser.find_element_by_xpath(selector)
            else:
                elem = self.browser.find_element_by_css_selector(selector)
        except NoSuchElementException:
            pass

        return elem