WebdriverWait error although item is present

Here is my code:

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
            element = WebDriverWait(driver, 6000).until(ec.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end)))) #This fails
            print "found"
            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


I am returning this (14453 is the xpath link text I am looking for)

enter loop
could not be found


It looks like my code can find a link, but then when asked to check if there is a link, it fails and fires the except statement. Why doesn't it work if it has already been found and printed?

Also, it doesn't fire almost immediately, although I gave it so much time to look.

Any idea where I am going wrong?

I tried

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))


I am using Python 2.7, Selenium 2.43, Firefox 23.0.3

By the way, I threw in a few print statements that might be out of place for testing if this xpath element can be found at certain points.

EDIT . When I remove the try statement, I get this error.

element = WebDriverWait(driver, 6000).until(EC.presence_of_element_located(By.XPATH((qID_xpath_start+str(qIDindex)+qID_xpath_end))))


NameError: global name 'By' is undefined

I have the following import statements in my code:

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


I am guessing I need to add an import statement, but I cannot find how I am importing this.

I tried:

from selenium.webdriver.common.by import By


When I ran it I missed this error but got this error:

element = WebDriverWait (driver, 6000) .until (EC.presence_of_element_located (By.XPATH ((qID_xpath_start + str (qIDindex) + qID_xpath_end)))) TypeError: object 'str' could not be called

Then I updated the WebDriverWait line to reflect alecxe's suggestion.

element = WebDriverWait(driver, 6000).until(EC.presence_of_element_located((By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end)))


and now it works.


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1 answer

The expression syntax is not correct, it should be: WebDriverWait

WebDriverWait(driver, 60).until(ec.presence_of_element_located((By.XPATH, qID_xpath_start+str(qIDindex)+qID_xpath_end)))


Note that the tuple is passed to the method presence_of_element_located()


Note that here 60

is 60 seconds.

Also, to get good at debugging and understanding what's going on, giving it up usually helps - remove it try/except

and see what error occurs.



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