code: def set_attribute(self, element, attribute, value):
          
          self.browser.execute_script('arguments[0].setAttribute("%s", %s);' % (
              attribute, self.__type2js(value=value)), element)
docs: :Description: Modify the given attribute of the target element.
          :param element: Element for browser instance to target.
          :type element: WebElement
          :param attribute: Attribute of target element to modify.
          :type attribute: string
          :param value: Value of target element's attribute to modify.
          :type value: None, bool, int, float, string