from selenium import webdriverfrom selenium.webdriver.support.wait import WebDriverWaitfrom selenium.webdriver.support import expected_conditions as ECfrom selenium.common.exceptions import NoSuchElementExceptionfrom selenium.webdriver.common.by import By

wd = webdriver.Firefox()
wd.get("http://www.renren.com")
wd.maximize_window()try: ? ?"""這段可以查看selenium的源碼,屬于smart wait"""
? ?email = WebDriverWait(wd,timeout=10).until(EC.presence_of_element_located((By.ID,'email')),message=u'元素加載超時!')
? ?email.send_keys("*** 你的賬號 ***")
? ?passwd = WebDriverWait(wd,timeout=10).until(EC.presence_of_element_located((By.ID,'password')),message=u'元素加載超時!')
? ?passwd.send_keys("*** 你的密碼 ***")
? ?wd.find_element_by_id("login").click() #點擊登錄except NoSuchElementException as e: ? ?print e.message