In the above example, we reproduced no such element found exception in the web application. Blocking operations for which a timeout is specified need a means to indicate that the timeout has occurred. Handling Selenium exception: Exception handling is a way that detects and resolves runtime exceptions and communication errors in selenium. If the commands do not complete even after the wait time is over, a TimeOut Exception is thrown. For many such operations it is possible to return a value that indicates timeout; when that is not possible or desirable then TimeoutException should be declared and thrown. C# Programming, Conditional Constructs, Loops, Arrays, OOPS Concept, This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. In this case, you can add an implicit wait to your code, so the action performed on the alert is delayed by a few seconds: However, be mindful when using implicit waits, as the timespan you select will apply even if the element or alert you are waiting for has already been loaded on the page. All rights reserved. Classification of Selenium Exceptions. It can happen if: To fix this, first make sure that you are using a unique locator, and that you are identifying the correct element on the page. If timeout exception- just go to next step. TimeOutException in Selenium Educative Answers Team In Selenium, TimeOut exception occurs when a command takes longer than the wait time to avoid the ElementNotVisible Exception. Below is the nunit error, I get: The HTTP request to the remote WebDriver server for URL 'localhost:3345/session//click' timed out after 60 seconds. If suppose we have used, try-catch its one of the methods, and it can catch the exceptions by using a combination of the try and catch keywords. Archived Forums 261-280 > Off-Topic Posts (Do Not Post Here) Off-Topic Posts (Do Not Post Here) . When clicking submit button, timeout error comes. public class New { You can try using some other property to locate the element such as CSS Selector or Xpath . Each command in WebdriverIO is an asynchronous operation. If the alert is indeed not loaded at all, then you may have found a bug in your AUT, or perhaps you are missing the steps that lead to the alert opening. 5.- Timeout exception comes when selenium tries to find element through explicit wait but unable to find. Since you are using Nunit famework and Selenium WebDriver for testing whichare third-party products, the issue is out of support range of Visual Studio testing forum. Most common Exceptions: 1) NoSuchElementException : FindBy method can't find the element. Therefore, we examine such exceptions at the . It has n number of types some of them are as follows: Start Your Free Software Development Course, Web development, programming languages, Software testing & others. Thread.sleep(2000); In general, selenium webdriver follows some standard ways for to handle the exceptions in Selenium WebDriver. The Throw and Throws keywords are the most important for programmers to generate the exception both implicitly and explicitly; the throw keyword is used to throw the exception for runtime exception to handle it. But nothing works. Solution You can manually increase the wait time by hit-and-trial. I'm using the wait_time and wait_until to wait for a page to be rendered but, sometimes, the page renders a way I'm not expecting. The element is no longer attached to the DOM. to Selenium Experts How to handle Timeout exception in selenium. import org.openqa.selenium.WebDriver; We can set page load timeout using Selenium webdriver in C# using the PageLoad method. even if you will enable the wait.until, this has its own timeout (could be 30 sec.) TimeoutException is related with explicitwait, fluentwait, pageLoadTimeOut, scriptLoadTimeout. Here we discuss the introduction, how to use selenium exceptions? } Step-1: Fluent Wait starts with capturing the start time to determine delay. Thread.sleep(2000); Thanks The try block is the initial or start of the block, and the catch method is located at the end of the try block for handling the resolved exception. import org.openqa.selenium.By; Instead, you want to catch the exception and perform a certain action when the exception is thrown. Exception handling is not new and it is the process of responding to the occurrence of exceptions that may happen during execution of our program. Throw: Throw keyword is used to throw exception to the . For example, when we are trying to click on an element which is not at all displayed on the browser, will cause our program to throw exception altering the expected flow. We all get amazing lots of Nice reading Selenium Tutorials How To Handle Java Lang . Looks a lot more better than ClassName=OpenQA.Selenium.NoSuchElementException, Message=no such element: Unable to locate element. 1.- Manually determine how to identify the pagination buttons, preferably the "next" and "previous" one. If your locator is good, then you can add a wait, that checks when the element is visible: This Selenium exception is thrown if you are using an incorrect selector. 2022 - EDUCBA. Selenium throws the TimeoutException exception when the user has defined the wait time, but the element has not been found within the wait time. I already had the page load timeout set. Handling checked Exceptions: If there is a chance of raising a checked exception we must and should do one of the following two things: 1. handling the exception by using try catch block or. The frame is nested inside a different frame. How to Handling Exceptions in Selenium Here, are some important standard using which you can handle Exceptions in Selenium WebDriver: Step 1) Try-catch This method can catch Exceptions, which uses a combination of the try and catch keywords. How to handle session timeout exception in Selenium Webdriver with C#. I'm running Selenium testcases(C#) using NUnit in virtual machine environment. By signing up, you agree to our Terms of Use and Privacy Policy. System.setProperty("webdriver.chrome.driver", "C:\\Users\\Kripya-PC\\Downloads\\chromedriver_win32 (1)\\chromedriver.exe"); The TimeoutExceptionwill be thrown when the page is not loaded within specific time. It is used to set time to wait for loading of the page. Python Selenium Timeout Exception Catch Driver.set_page_load_timeout(30) If condition: isrunning = 0 try: Driver.set_page_load_timeout(30) except: isrunning = 0 Driver.Close() -Do whatever else in function - If condition: isrunning = 0 Driver.Close() from selenium import webdriver from selenium.common.exceptions import TimeoutException As we have seen, the issue with the Timeout Exception In Selenium Python variable was resolved by making use of a variety of distinct instances. The StaleElementReferenceException means that a reference to an element is now stale, i.e. Perfecto Knowledge Base Welcome! The web page was not completely loaded and the element is not found. Were sorry. 1. You may also have a look at the following articles to learn more . With the help of try-catch, multiple catch blocks, Throw/Throws, these are some ways to handle the selenium exceptions during compile and runtime mechanism. So that if we use Multiple catch blocks, the exception will occur more than once from a single block of code, but multiple catch blocks are used for to handle every kind of exception separately with some block of code. If the element is not matched or wrongly mentioned in the Xpath, it will throw the no such element found exception. Exceptions are errors that occur during application execution. I tried implicit, explicit web driver waits and page load timeouts. We can divide the Selenium exceptions into two types, including Checked Exceptions and Unchecked Exceptions. The following article provides an outline for Selenium Exceptions. When the code is run, it will execute successfully in the terminal. It is a common way to recognize those who have helped you, and makes it easier for other visitors to find the resolution later. Basically, the try-catch blocks are referred to as the protected code. Enjoy TestProject's end-to-end test automation Platform, Forum, Blog and Docs - All for FREE. Checked ExceptionIt. How does Python handle timeout exception in Selenium? The selenium exception is one of the features. Timeout exception can easily be maintained with Try catch block function centralized_function_to_extract_object () { try { // time out exception comes here }catch (Exception e) { // report the failure reportfailure (); } } For example, if you go to the TestProject blog page and scroll down a bit, you will see a message prompting you to Sign Up for the TestProject test automation platform. . Again, you can do this using explicit waits: This exception is thrown when an alert is present on the page, preventing you from interacting with the elements. the element is no longer available on the web page DOM. In Explicit wait along with wait time, we also provide the wait condition. When the given timeo ut is very low. I tried implicit, explicit web driver waits and page load timeouts. Andreea is a QA engineer, experienced in web and desktop applications, and always looking to improve her automation skills and knowledge. Step by step analysis of the above sample code. See my code below: from selenium import webdriver from selenium.common.exceptions import TimeoutException Please remember to "Mark as Answer" the responses that resolved your issue. We used thread count to perform each operation and count the time frame for spending the stable position on each page. Archived Forums > Off-Topic Posts (Do Not Post Here) Off-Topic Posts . You will use it in the test assertions, and you expect the button to be found when the login is successful, and not found when the login fails. Instead of the exception, you want the method to return false. WebDriver dr = new ChromeDriver(); Please remember to "Mark as Answer" the responses that resolved your issue. exe keeps declaring more memory and never stops. An example of this would be using a compound class name, which is not allowed: The solution for this is to make sure that the locator is correct. United States (English) Brasil (Portugus) esko (etina) Deutschland (Deutsch) Espaa (Espaol) France (Franais) Indonesia (Bahasa) Italia (Italiano . WebDriver dr = new ChromeDriver(); You are using an incorrect frame Id or name. Selenium exception solutions. Each web page will calculate the ids and names for accessing the web elements in the selenium drivers interfaces. Youll be auto redirected in 1 second. WebElement wb=dr.findElement(By.xpath("//a[@id='ysignin']")); You wont be able to click any of the links on the page until you close it. Checked Exceptions. Here's a summary of images Selenium Tutorials How To Handle Java Lang Nullpointerexception In Selenium very best After merely placing symbols we possibly can one Article to as many 100% Readable editions as you like that any of us say to and also demonstrate Creating articles is a lot of fun to your account. The frame was not yet loaded. import org.openqa.selenium.WebElement; I suggest that you can consult your issue on Selenium support: Hopefully, this article can help you understand them and deal with them . We know the types of exceptions that occurred at each stage of the program execution. I suggest that you can consult your issue on Selenium support: TimeoutException This exception will be thrown when the page or element was not loaded after the specified wait time. You can, for example, use a simple + or +=, the good old StringBuffer or a StringBuilder. The term EXCEPTION is a event which occurs during executing of a program which disrupts the flow of given instructions. we can use throw for checked, unchecked and user defined exceptions. }. How to Handle Exceptions in Selenium Webdriver Try/Catch: A method catches an exception using a combination of the try and catch keywords. MSDN Community Support str, timeout: int, interval: int = 1) -> bool: """Wait for an activity: block until target . Creating Local Server From Public Address Professional Gaming Can Build Career CSS Properties You Should Know The Psychology Price How Design for Printing Key Expect Future. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. public static void main(String[] args) throws InterruptedException { Please remember to "Mark as Answer" the responses that resolved your issue. Again, this can happen for multiple reasons: In this example, to interact with elements inside frame-left, you would first need to switch to frame-top: This one is very similar to the previous exception, applied to windows. 2022 Microsoft Corporation. Get full access to the world's first cloud-based, open source friendly testing community. In other words, the element was initially found on the DOM, but the DOM has changed since then. To overcome this, you can increase the wait time, if you are using an implicit wait, or better yet, replace the implicit wait with an explicit wait. 2. specify throws clause on the method there may be a chance of raising an exception . var windows = driver.WindowHandles; driver.SwitchTo ().Window (windows [1]); 10. Then: try: browser.get (url) except selenium.common.exceptions.TimeoutException: pass # or do whatever. The NoSuchElementException is thrown when the element cannot be found on the web page. Step-3: If the condition fails, Fluent Wait makes the application to wait as per the value set by the <pollingEvery (5, SECONDS)> method call. import org.openqa.selenium.By; Try is the start of the block and Catch is at the. , The more tests you write, the higher the chances that youll encounter at least some of these Selenium exceptions during your work. Step-2: Fluent Wait then checks the condition defined in the until () method. Ways to solve different exceptions in Selenium WebDriver. This happens when you try to switch to a new window (or tab), which cannot be found. The common causes for this are: One possible solution is to refresh the page and try to find the element again: Or you can wait for the element to load before you manipulate it. in selenium. Amanda Zhu dr.manage().window().maximize(); . Reasons : Element is not present or given Condition is not met. Since you are using Nunit famework and Selenium WebDriver for testing whichare third-party products, the issue is out of support range of Visual Studio testing forum. This brings us to exceptions. As you start writing more and more automated tests with Selenium WebDriver, you will start encountering various exceptions. In this case, you must first switch to the parent frame, then to the frame you want to use. One solution to this exception is to use the Action class for performing the click: Or if the element is simply out of view and scrolling will reveal it, you can use the JavaScript scroll executor as shown above for the NoSuchElementException. So, if you have something like this in a Selenium test, and your test tries to click a blog title, you will get an ElementClickInterceptedException. How to handle session timeout exception in Selenium Webdriver with C#. } withTimeout(timeout, SECONDS). Python 3: Curso completo de cero a experto. All Implemented Interfaces: java.io.Serializable. You can solve this by getting all the windows handles, then switching to the correct one: This exception will be thrown when the page or element was not loaded after the specified wait time. The following are 30 code examples of selenium.common.exceptions.TimeoutException(). dr.quit(); System.setProperty("webdriver.chrome.driver", "C:\\Users\\Kripya-PC\\Downloads\\chromedriver_win32 (1)\\chromedriver.exe"); We can handle the Checked Exceptions during the process of writing codes. org.openqa.selenium.TimeoutException: timeout (Session info: chrome=67..3396.99) (Driver info:. In the above example, we reproduced the exception called StaleElementReferenceException for performing the sign-in operations on the yahoo web application. This can be done with a try-catch block. public static void main(String[] args) throws InterruptedException{ I suggest that you can consult your issue on Selenium support: Try-catch: Try-catch statement consists of a try keyword/block followed by one or more catch clauses. Finally, the finally block is used to run critical code such as shutting connections, streams, and so on. Thank you for your contributions. import org.openqa.selenium.WebDriver; 3.- Using Selenium and xpath, select the 'next' button. Quick access. Windows Dev Center. It is a common way to recognize those who have helped you, and makes it easier for other visitors to find the resolution later. One of the main ones is that an issue in one module can prevent the execution of the whole program. This can be achieved by using the following code: Another scenario can be that even though you dont expect the error, you still want your program to continue running, and have the failure result logged and displayed gracefully in your test report. If suppose we have used, try-catch it's one of the methods, and it can catch the exceptions by using a combination of the try and catch keywords. dr.findElement(By.id("abc")).sendKeys("sdvg"); import org.openqa.selenium.chrome.ChromeDriver; It dives deeper and provides information on edge cases and scenarios you are less likely to encounter on a day to day basis. Since you are using Nunit famework and Selenium WebDriver for testing whichare third-party products, the issue is out of support range of Visual Studio testing forum. The two catch blocks have no limitation for calculating the number of catch blocks. http://docs.seleniumhq.org/support/ for better response. In order to handle these above types of Selenium exceptions, this article will discuss some compiler directives to support exception handling. 4.- Click it. In this case, you can use the catch block to log the error and display a more user-friendly message, such as The test failed because the Logout button was not found. Timeouts are usually performed using Selenium wait commands. MSDN Community Support It will wait till the condition or the maximum wait time provided before throwing the Exception"ElementNotVisibleException".We should use explicit wait as per our application flow and implement logic as per the requirement. wb.click(); That means you need tohandle the exception. How to handle session timeout exception in Selenium Webdriver with C#. Python Selenium Timeout Exception Catch 63,196 Almost of your code is working fine except the Driver.Close(). Thanks In the above scenario, you can replace the ClassName locator strategy with CssSelector: This Selenium exception is usually thrown when the element was found on the page, butthe click action would be performed on a different element that is overlapped our element. The Perfecto knowledge base complements the Perfecto online help. public class TimeoutException extends WebDriverException. The finally block should be executed with or without a catch block in the code. We used default methods for navigating and clicking the page in the application. Basically, there are 2 types of exceptions in Selenium and they are as follows: Checked Exception Unchecked Exception Let's understand these two exceptions in depth. It is a regular occurrence for Selenium WebDriver during the execution of automation code; also, the exception name itself it implies or unusual occurrences for numerous reasons. Off-Topic Posts (Do Not Post Here) Off-Topic Posts (Do Not Post Here) Amanda Zhu I'm running Selenium testcases(C#) using NUnit in virtual machine environment. pollingEvery(timeout, SECONDS . In the selenium framework, the automation scripts are used to save time in the application productivity and the client satisfaction for their business needs. Exception objects are created and then they are thrown with the throw keyword. Therefore, time is a crucial component in the whole testing process. It is a common way to recognize those who have helped you, and makes it easier for other visitors to find the resolution later. GitHub / spooning on Aug 17, 2015 I have not even tried the version with the space in variable name, after I saw the docs. Lets go through the most common Selenium exceptions that you might encounter, understand their causes, and see the possible solutions. The added delay helps ensure that the WebElement to be interacted with is available on the web page. This timeout is generally used with the navigate and manage methods. Another reason can be that the alert is displayed slower than Selenium performs the actions. Basically, an exception is an event, which occurs during the execution of a program that disrupts the normal flow of the program instructions. The keyword "throw" is used to throw an exception. Use explicit waits. Sometimes, the expected result is to actually have an exception thrown. This also means that we cannot interact with the element, so we cant click, send keys, or perform other actions on it. When an element is provided in the DOM, but we are unable to select it for selenium exception happens, and therefore it is not feasible for to interact with web elements that can be separated from the current DOM a selenium exception occurs during this session it also throws SessionNotFoundException once the browser is closed the webdriver starts its own activity. selenium-webdriver node.js: how to handle missing element after wait timeout (exception can't seem to be caught) Selenium Webdriver Python How do you wait for text of an element to appear after clicking a button and keep trying until text appears python selenium accessing more than one of popup window pages; Parse links if pagination exists, using Selenium You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. How to handle session timeout exception in Selenium Webdriver with C#. Windows Dev Center Home ; Windows PCs; Docs; Downloads; Samples; Support Below is the nunit error, I get: The HTTP request to the remote WebDriver server for URL 'localhost:3345/session//click' timed out after 60 seconds. But nothing works. The various Selenium Webdriver timeouts used while testing an application are as follows: implicitlyWait () setScriptTimeout () pageLoadTimeout () Thread.sleep () Let's discuss each method in detail. Handling exceptions is the process of managing these atypical events in order to prevent such problems from arising. Here we will try to understand how to handle selenium exceptions and types of exceptions exists with Selenium Web Driver. The try block will run the code to add the password in which the exception will be raised. Below is the nunit error, I get: The HTTP request to the remote WebDriver server for URL 'localhost:3345/session//click' timed out after 60 seconds. }. 1. implicitlyWait () When clicking submit button, timeout error comes. Using Selenium WebDriver to develop complex software comes with risks. Forums home; Browse forums users; FAQ; Search related threads Selenium JavaScript Automation Testing Tutorial For Beginners, Installing Selenium WebDriver Using Python and Chrome, Announcing TestProject 2.0 Next Gen Release: Hybrid Cloud & Offline Mode, Setup iOS Test Automation on Windows using TestProject, Automating End to End API Testing Flows Guide [Test Examples Included], Create Behavior-Driven Python Tests using Pytest-BDD, Getting Started with TestProject Python SDK, State of Open Source Testing - 2020 Report, Create Coded Web Tests and Addons using TestProject's Java SDK, You are using the wrong locator. Image is Modified with the help of BigStockPhoto. Case 1) is solved by enabling waits before some click or other action should happen. Have a look at the different Waits in Selenium that can help you achieve this task. http://docs.seleniumhq.org/support/ for better response. ALL RIGHTS RESERVED. dr.manage().window().maximize(); dr.navigate().back(); If the timeout time is set to negative, then the time taken to load the page is endless. The most important point is to catch the issues that will handle the result of the exception handling for anticipating process and intelligently handle the mechanism for unusual problems before they occur and these errors have occurred at a variety of reasons which includes the syntax faulty, erroneous parameters passing the values or lack of specific features which needed on the application. Handling Exceptions In Selenium WebDriver. Exception (TimeoutException) your code will work you don't need to add this line you are give timeout argument with WebDriverWait (driver, 10) The 10 or what ever time you wish is time your script will wait until than Share Improve this answer Follow answered Aug 20, 2020 at 5:12 Haseeb Ahmed 235 2 10 In this case, you dont want your code to stop executing or to throw the exception. When clicking submit button, timeout error comes. You can dismiss or accept the alert, as needed, and move on with the test steps: The NoAlertPresentException is thrown when Selenium is trying to interact with an alert that is not loaded on the webpage. It can only be used after the try block. Syntax driver.Manage ().Timeouts ().PageLoad = TimeSpan.FromSeconds (10); Here, 10 is the amount of time in seconds. I tried implicit, explicit web driver waits and page load timeouts. This can happen for a number of reasons: This one is a bit different than the NoSuchElementException, because it means that the element was found in the DOM, but it is not visible on the page. In general, the exception occurred at the time of program execution; while we run the program, it generates the exception that should be handled to avoid the program crash on the application. MSDN Community Support Timeouts. Multiple catch blocks: There are various types of Exceptions, and one can expect more than one exception from a single block of code. 2.- Manually identify how to determine if there are more pages to go through, for example, if in the last page the "next" button disappears. With the help of try-catch, multiple catch blocks, Throw/Throws, these are some ways to handle the selenium exceptions during compile and runtime mechanism. How to handle session timeout exception in Selenium Webdriver with C#. Try-catch method can catch Exceptions, which uses a combination of the try and catch keywords. A request is fired to the Selenium server (or a cloud service like Sauce Labs), and its response contains the result once the action has completed or failed.. I'm running Selenium testcases(C#) using NUnit in virtual machine environment. This forum is closed. Lets assume you have a method that searches for the Logout button. 2) StaleElementReferenceException : This tells that element is no longer appearing on the DOM page. If suppose the coder cannot handle the exception; then it will be used as the Throws keyword in any method signatures. When unhandled, they disrupt the normal program execution. Hi @clemfromspace. This is a guide to Selenium Exceptions. wb.click(); If I don't use wait_time, I will see the rendered content (if it was faster enough), but using wait time, selenium will trigger a timeout exception and scrapy won't parse the result after all. Copies the C string pointed by source into the array pointed by destination, including the terminating null character (and stopping at that point). You can do this using a JavaScript executor: The locator strategy you are using finds more elements with the same locator, and the first one is not visible. To handle the Exception, the catch block is utilised. An exception will be thrown if the page is not loaded within the timeout specified. dr.get(strs); Similar to the NoSuchElementException, this Selenium exception is thrown when a frame is not found. . But nothing works. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, Explore 1000+ varieties of Mock tests View more, Special Offer - Selenium Automation Testing Course Learn More, 600+ Online Courses | 50+ projects | 3000+ Hours | Verifiable Certificates | Lifetime Access, Selenium Automation Testing Training (11 Courses, 4+ Projects, 4 Quizzes), Penetration Testing Training Program (2 Courses), Software Testing Training (11 Courses, 2 Projects), Software Development Course - All in One Bundle. Get Started The pageLoadTimeout is the method used to set the time for the entire page load prior to throwing an exception. If you cannot find an answer to your question or a solution to your problem, contact Perfecto Support. after some time because the object is not there at all. Whether or whether an exception is handled, it is always run. import org.openqa.selenium.chrome.ChromeDriver; To solve it, you can use Selenium explicit waits, and wait until the element can be found on the page. Look into selenium.webdriver.Firefox.set_page_load_timeout (SITE_TIMEOUT). We handle these exceptions before compiling the code. count/in good to know, I will change our teardown accordingly. How to scrape data in selenium using selector; Does Set which we get in driver.getWindowhandles() retain order; Explicit wait is not working if the element located is of 'text' Does Selenium WebDriver return incorrect Cookie.Expiry? Syntax driver.manage ().timeouts ().pageLoadTimeout (4, TimeUnit.SECONDS); In this case, make sure that you correctly identify the frame you want to switch to. Therefore, we used different features classes, methods, variables, and keywords to perform the operations and make the application productivity as user satisfaction. Exception thrown when a blocking operation times out. Thanks Try-catch: This method can catch Exceptions by using a combination of the try and catch keywords. To overcome this, you can increase the wait time, if you are using an implicit wait, or better yet, replace the implicit wait with an explicit wait. Thrown when a command does not complete in enough time. How to handle session timeout exception in Selenium Webdriver with C#. See Also: It should be Driver.close(). Solution 1: Adding Waits To Selenium Tests To handle elements that take some time to load on the web page, you may add waits in Selenium. http://docs.seleniumhq.org/support/ for better response. . Types and methods, respectively. Ill guide you through the most common Selenium exceptions and help you solve them so your C# automation framework is more reliable. Heres a code example in C# (youll also need to install the DotNetSeleniumExtras NuGet package): The element is not visible on the page and you have to scroll up or down to reach it. Archived Forums > Off-Topic Posts (Do Not Post Here) Off-Topic Posts (Do Not Post Here) . There is a complete list of Exceptions mentioned on the Selenium Doc which you may or may not encounter in course of your testing. The except block will handle the exception by locating the password input element and sending the password value. But in normal time, it has been checked, and un-checked exceptions are the two main types of exceptions that occur at compile and runtime. dr.get("https://in.search.yahoo.com/?fr2=inr"); There is no one fits all. String strs="http://www.testyou.in/Login.aspx"; To solve this, you can use the solution above and add an implicit wait. some call of selenium functions will time out (click, type, etc.) Her current focus is automation testing with C#. The content you requested has been removed. Amanda Zhu def find_element_by_id_u (browser, element): try: obj = webdriverwait (browser, 1).until ( lambda browser : browser.find_element_by_id (element) ) return obj except timeoutexception, err: print "timeout exception for element ' {elem}' using find_element_by_id\n".format (elem = element) print traceback.format_exc () browser.close () public class New { In this case, the method will return a boolean, and if the element is not found it will throw a NoSuchElementException. 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