Python Selenium Explict wait doen not raise TimeoutException

Question

browser = webdriver.PhantomJS()
def get_score(url):
    browser.get(url)
    elements = wait.until(EC.presence_of_all_elements_located((By.XPATH, "//span[@class='shopdsr-score-con']")))
    description_score = float(elements[0].text)
    service_score = float(elements[1].text)
    logistics_score = float(elements[2].text)

About is my code. Sometimes this may get stuck for quite long time and I expect there should be TimeOutException if it get stuck for 30 seconds because I have this code wait = WebDriverWait(browser, 30) But this never happens, the program just wait there...What's the question?

undetected Selenium · Accepted Answer · 2017-12-04 12:20:04Z

As you mentioned, you have set WebDriverWait(browser, 30) so effectively your code will be looking like :

browser = webdriver.PhantomJS()
def get_score(url):
    browser.get(url)
    elements = WebDriverWait(browser, 30).until(EC.presence_of_all_elements_located((By.XPATH, "//span[@class='shopdsr-score-con']")))
    description_score = float(elements[0].text)
    service_score = float(elements[1].text)
    logistics_score = float(elements[2].text)

Logically, there is no error in your code block but the the program just wait there because when you invoke get(url) the web client i.e. PhantomJS Browser doesn't returns back document.readyState = "complete" so early. The JavaScript and the AJAX Calls still keeps loading. Hence Page Loading gets elongated.

Once the document.readyState = "complete" is returned by the web client i.e. PhantomJS Browser then only Selenium executes the next line of code:

elements = WebDriverWait(browser, 30).until(EC.presence_of_all_elements_located((By.XPATH, "//span[@class='shopdsr-score-con']")))

Hence the program just wait there for some more time.

Update :

As per your comment you need to look at the options of pageLoadStrategy either setting pageLoadStrategy to eager or none as per this QA Don't wait for a page to load using Selenium in Python

Updated my Answer. Please mark the Answer as Accepted by clicking on the tick mark beside my Answer just below the VoteDown arrow so the tick mark turns green.

pankaj mishra · Accepted Answer · 2017-12-04 10:55:25Z

use try,except

   from selenium.common.exceptions import TimeoutException
   from selenium.webdriver.support.ui import WebDriverWait
   from selenium.webdriver.support import expected_conditions as EC

   timeout=30

   try:
       element_present1 = EC.presence_of_element_located((By.XPATH, "//input[@name='username']"))
       WebDriverWait(driver, timeout).until(element_present1)
   except TimeoutException:
       print "Timed out waiting for login page to load"

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