Python 即使存在元素,WebdriverWait也会失败
这是我的密码:Python 即使存在元素,WebdriverWait也会失败,python,html,selenium,xpath,selenium-webdriver,Python,Html,Selenium,Xpath,Selenium Webdriver,这是我的密码: def CheckQueue(driver): qdone = False qID_xpath_start = "/html/body/div[5]/form/table/tbody[1]/tr[" qID_xpath_end = "]/td[2]/a" qIDindex = 1 while qdone == False: print "enter loop" print driver.find_elemen
def CheckQueue(driver):
qdone = False
qID_xpath_start = "/html/body/div[5]/form/table/tbody[1]/tr["
qID_xpath_end = "]/td[2]/a"
qIDindex = 1
while qdone == False:
print "enter loop"
print driver.find_element_by_xpath(qID_xpath_start+str(qIDindex)+qID_xpath_end).text #This prints
try:
element = WebDriverWait(driver, 6000).until(ec.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end)))) #This fails
print "found"
except:
qdone= True
print "could not be found"
print driver.find_element_by_xpath(qID_xpath_start+str(qIDindex)+qID_xpath_end).text
if qdone == False:
print driver.find_element_by_xpath(qID_xpath_start+str(qIDindex)+qID_xpath_end).text
print "testing"
qIDindex +=1
print "loop"
return driver
我返回了这个(14453是我正在寻找的xpath的链接文本)
我的代码似乎能够找到链接,但当被要求检查链接是否存在时,它失败,并激活except语句。如果它已经被找到并打印出来,为什么会失败呢
而且,它几乎立刻就失败了,尽管我已经分配了这么多时间来查看它
知道我哪里出错了吗
我试过了
element = WebDriverWait(driver, 6000).until(ec.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end))))
element = WebDriverWait(driver, 6000).until(EC.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end))))
element = WebDriverWait(driver, 6000).until(ec.presence_of_element_located(By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end))
element = WebDriverWait(driver, 6000).until(ec.presence_of_element_located(By.xpath, qID_xpath_start+str(qIDindex)+qID_xpath_end))
我使用的是Python 2.7、Selenium 2.43、Firefox 23.0.3
顺便说一句,为了测试xpath元素是否可以在某些点找到,我加入了几个可能感觉不合适的print语句
编辑:删除try语句时,出现此错误
element = WebDriverWait(driver, 6000).until(EC.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end))))
NameError:未定义全局名称“By”
我的代码中有以下导入语句:
from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait # available since 2.4.0
from selenium.webdriver.support import expected_conditions as EC # available since 2.26.0
from selenium.webdriver.support.ui import Select
from selenium.webdriver.common.action_chains import ActionChains
我想我确实需要添加一个import语句,但我似乎找不到如何通过
我试过:
from selenium.webdriver.common.by import By
当我运行它时,我克服了那个错误,但收到了这个错误:
element=WebDriverWait(driver,6000).until(EC.presence_of_element_located(By.XPATH)((qID_XPATH_start+str(qIDindex)+qID_XPATH_end)))
TypeError:“str”对象不可调用
然后,我更新了我的WebDriverWait行,以反映alecxe的建议
element = WebDriverWait(driver, 6000).until(EC.presence_of_element_located((By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end)))
现在它似乎正在发挥作用 错误,应该是:
WebDriverWait(driver, 60).until(ec.presence_of_element_located((By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end)))
注意传递到presence\u of_element\u located()
方法中的元组
请注意,60
在这里是60秒
此外,为了成功地调试和理解正在发生的事情,让它失败通常会有所帮助-删除
try/except
,查看引发了什么类型的错误。删除try/except
块,并发布您得到的完整错误回溯。现在已经晚了,但值得指出的是,WebDriverWait
只需几秒钟,而不是几毫秒。在这个答案中留下6000可能会导致某人被解雇。@Tgsmith61591啊,我知道我是如何混淆的-webdriverjs在浏览器中使用毫秒。wait()
。对我来说,selenium绑定太多了:)我做同样的事情。每当我从Java转到Python时,我都会不经意地等待很长一段时间才意识到时间。sleep(1000)
与线程不同。sleep(1000)
:-)如果你想要外部参照的一部分,你可以使用元素的存在((By.XPATH,//a[以(@href)开头,”https://www.bla-bla)
。不知道是否可以写得更短,只是在其他帖子中看到了。@AlexeiMartianov它可以是:presence\u of_element\u located((By.CSS\u SELECTOR,'a[href^=”https://www.bla-bla“]”)
:)
WebDriverWait(driver, 60).until(ec.presence_of_element_located((By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end)))