casperjs + selenium 怎么定位iframe元素？

Question

casperjs + selenium 怎么定位iframe元素？casper.then(function SetHaulier(){    test.comment("Set Haulier");    driver = webdriver.PhantomJS();    driver.switch_to.frame(0);    content = driver.page_source.encode('utf-8');    //driver.switch_to.frame(0);    //require('utils').dump(this.getElementBounds('//html/body/form/div[1]/div[2]/iframe'));    this.click(xPath("//tr/td[7]/a/span"));    casper.wait(5000,function Sleep(){        casper.capture(config.captureDir+"/WMC Dashboard (Ligentia)/DCBook/09-ClickDCBookLink.png");    });});页面Html

Answer 1

from selenium import webdriver
driver = webdriver.Firefox()
driver.switch_to.frame(driver.find_element_by_tag_name("iframe"))