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What is the explicit wait in Selenium with python?
While working with Selenium, there may be situations when we see that after page load action by the browser, the web elements are getting loaded at various intervals of time.
This type of situation leads to syncing problems between Selenium and the web element on the page. The identification of elements does not happen due to the absence of that element in DOM. The exception like ElementNotVisibleException is thrown due to this.
The wait concept in Selenium overcomes this problem and gives a delay between elements identification and actions performed on them. The explicit wait is applied not to all but to a specific element on the page. It is actually a condition which has to be met before moving to the next step of the test case.
The explicit wait is also a dynamic in nature which means the wait will be there as long as necessary. Thus if the wait time is five seconds and our given condition is satisfied at the third second, we need not halt the execution for the next two seconds.
The webdriverWait class along with expected_conditions is used to create an explicit wait. The webdriverWait class can call the ExpectedCondition after every 500ms by default for checking if the condition is met.
w = WebDriverWait(driver, 7) w.until(expected_conditions.presence_of_element_located((By.ID, "Tutorialspoint")))
The expected conditions commonly used in explicit wait are listed below −
Explicit is more difficult to implement than implicit wait, however it does not slow down the execution and is applicable to a specific element on a page.
Code Implementation with explicit wait.
from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions from selenium.webdriver.support.wait import WebDriverWait #browser exposes an executable file #Through Selenium test we will invoke the executable file which will then #invoke actual browser driver = webdriver.Chrome(executable_path="C:\chromedriver.exe") #setting implicit wait 10 seconds driver.implicitly_wait(10) # to maximize the browser window driver.maximize_window() driver.get("https://www.tutorialspoint.com/tutor_connect/index.php") #to refresh the browser driver.refresh() # identifying the link with the help of link text locator driver.find_element_by_link_text("Search Students").click() w.(expected_conditions.presence_of_element_located((By. CSS_SELECTOR, "input[name = 'txtFilterLocation']"))) #to close the browser driver.close()
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