Executing script with Selenium inside doesn't work, but when doing in Console it does</a></h1> </div> <div class="grid fw-wrap pb8 mb16 bb bc-black-075"> <div class="grid--cell ws-nowrap mr16 mb8" title="2016-01-12 19:07:53Z"> <span class="fc-light mr2">Asked</span> <time itemprop="dateCreated" datetime="2019-02-13T15:31:24.917" class="fromnow">Feb 13 '19 at 15:31</time> </div> <div class="grid--cell ws-nowrap mr16 mb8"> <span class="fc-light mr2">Active</span> <time class="fromnow" title="2022-10-18T17:05:23.430" datetime="2022-10-18T17:05:23.430">Oct 18 '22 at 17:05</a> </div> <div class="grid--cell ws-nowrap mb8" title="Viewed 169 times"> <span class="fc-light mr2">Viewed</span> 169 times </div> </div> <div id="mainbar" role="main" aria-label="questions and answers"> <div id="question" class="question" data-questionid="54673816" data-ownerid="10398023" data-score="1"> <div class="post-layout"> <div class="votecell post-layout--left"> <div class="js-voting-container grid jc-center fd-column ai-stretch gs4 fc-black-200" data-post-id="54673816"> <button class="js-vote-up-btn grid--cell s-btn s-btnunset c-pointer"><svg aria-hidden="true" class="m0 svg-icon iconArrowUpLg" width="36" height="36" viewBox="0 0 36 36"><path d="M2 26h32L18 10 2 26z"></path></svg></button> <div class="js-vote-count grid--cell fc-black-500 fs-title grid fd-column ai-center" itemprop="upvoteCount" data-value="1">1</div> <button class="js-bookmark-btn s-btn s-btnunset c-pointer py4"> <svg aria-hidden="true" class="svg-icon iconBookmark" width="18" height="18" viewBox="0 0 18 18"><path d="M6 1a2 2 0 00-2 2v14l5-4 5 4V3a2 2 0 00-2-2H6zm3.9 3.83h2.9l-2.35 1.7.9 2.77L9 7.59l-2.35 1.7.9-2.76-2.35-1.7h2.9L9 2.06l.9 2.77z"></path></svg> <div class="js-bookmark-count mt4" data-value=""></div> </button> </div> </div> <div class="postcell post-layout--right"> <div class="s-prose js-post-body" itemprop="text"><p>I'm automating a service with Selenium, and the website I need to access uses iframes tags, and I need to alter the value of some elements inside this tag.</p> <p>I was using the Edge WebDriver, but I changed to Chrome because I thought it'd solve the problem, and unfortunately, it didn't, so I don't think it had anything to do with the Driver, but I'd rather keep with Chrome, if possible.</p> <p>This is the line that simulates the script:</p> <pre><code>gc.execute_script("""document.evaluate('//[@id="QRYSELECT_WRK_QRYSEARCHTEXT254"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.setAttribute('value','foo')""") </code></pre> <p>And it raises me an exception about null pointers, but basically, it's saying that the browser couldn't find this element, and, therefore, couldn't change its value.</p> <p>Ironically, when I open the console and write the following command (which is the same script above):</p> <pre><code>document.evaluate('//[@id="QRYSELECT_WRK_QRYSEARCHTEXT254"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.setAttribute('value','foo') </code></pre> <p>It works.</p> <p>Here's the traceback to the error when I call execute_script from gc:</p> <pre><code>Traceback (most recent call last): File "<pyshell#12>", line 1, in <module> gc.execute_script("""document.evaluate('//[@id="QRYSELECT_WRK_QRYSEARCHTEXT254"]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.setAttribute('value','CEL_ADMITIDOS')""") File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\support\event_firing_webdriver.py", line 88, in execute_script return self._dispatch("execute_script", (script, self._driver), "execute_script", unwrapped_args) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\support\event_firing_webdriver.py", line 160, in _dispatch raise e File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\support\event_firing_webdriver.py", line 157, in _dispatch result = getattr(self._driver, d_call)(d_args) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 636, in execute_script 'args': converted_args})['value'] File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute self.error_handler.check_response(response) File "C:\Program Files\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.WebDriverException: Message: unknown error: Cannot read property 'setAttribute' of null (Session info: chrome=71.0.3578.98) (Driver info: chromedriver=71.0.3578.137 (86ee722808adfe9e3c92e6e8ea746ade08423c7e),platform=Windows NT 10.0.17134 x86_64) </code></pre> <p>So I guess it's probably something related to permissions...? But I don't know, it's quite weird to get two different results to the same script, isn't it?</p> <p>Thanks!</p></div> <div class="mt24 mb12"> <div class="post-taglist grid gs4 gsy fd-column"> <div class="grid ps-relative"> <a href="../../questions/tagged/python-3.x" class="post-tag js-gps-track" title="show questions tagged 'python-3.x'" rel="tag">python-3.x</a> <a href="../../questions/tagged/selenium-webdriver" class="post-tag js-gps-track" title="show questions tagged 'selenium-webdriver'" rel="tag">selenium-webdriver</a> <a href="../../questions/tagged/selenium-chromedriver" class="post-tag js-gps-track" title="show questions tagged 'selenium-chromedriver'" rel="tag">selenium-chromedriver</a> <a href="../../questions/tagged/selenium-edgedriver" class="post-tag js-gps-track" title="show questions tagged 'selenium-edgedriver'" rel="tag">selenium-edgedriver</a> </div> </div> </div> <div class="mb0"> <div class="mt16 grid gs8 gsy fw-wrap jc-end ai-start pt4 mb16"> <div class="grid--cell mr16 fl1 w96"></div> <div class="post-signature grid--cell"> <div class="s-user-card s-user-card"> <time class="s-user-card--time" datetime="edited Oct 18 '22 at 17:05">edited Oct 18 '22 at 17:05</time> <a href="../../users/214143/jason-aller" class="s-avatar s-avatar32 s-user-card--avatar"> <img class="s-avatar--image" src="../../users/profiles/214143.webp" data-jdenticon-width="32" data-jdenticon-height="32" data-jdenticon-value="Jason Aller" /> </a> <div class="s-user-card--info"> <a href="../../users/214143/jason-aller" class="s-user-card--link">Jason Aller</a> <ul class="s-user-card--awards"> <li class="s-user-card--rep" title="reputation score">3,541</li> <li class="s-award-bling s-award-blinggold" title="28 gold badges">28</li> <li class="s-award-bling s-award-blingsilver" title="38 silver badges">38</li> <li class="s-award-bling s-award-blingbronze" title="38 bronze badges">38</li> </ul> </div> </div> </div> <div class="post-signature owner grid--cell"> <div class="s-user-card s-user-card"> <time class="s-user-card--time" datetime="asked Feb 13 '19 at 15:31">asked Feb 13 '19 at 15:31</time> <a href="../../users/10398023/vitor-tamberlini" class="s-avatar s-avatar32 s-user-card--avatar"> <img class="s-avatar--image" src="../../users/profiles/10398023.webp" data-jdenticon-width="32" data-jdenticon-height="32" data-jdenticon-value="Vitor Tamberlini" /> </a> <div class="s-user-card--info"> <a href="../../users/10398023/vitor-tamberlini" class="s-user-card--link">Vitor Tamberlini</a> <ul class="s-user-card--awards"> <li class="s-user-card--rep" title="reputation score">25</li> <li class="s-award-bling s-award-blingsilver" title="1 silver badges">1</li> <li class="s-award-bling s-award-bling__bronze" title="12 bronze badges">12</li> </ul> </div> </div> </div> </div> </div> </div> <div class="post-layout--right js-post-comments-component"> </div> </div> </div> <div id="answers"> <a name="tab-top"></a> <div id="answers-header"> <div class="answers-subheader grid ai-center mb8"> <div class="grid--cell fl1"> <h2 class="mb0" data-answercount="9">0 Answers<span style="display:none;" itemprop="answerCount">0</span></h2> </div> </div> </div> </div> </div> </div> </div> <script src="../../static/js/stack-icons.js"></script> <script src="../../static/js/fromnow.js"></script> </body> </html>