我試圖在一堆行中抓取資料。我可以使用以下內容擴展單個行：
WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.XPATH, '//*[@id="7858101"]'))).click()
問題是每一行都有不同的ID。他們有共同的類名，所以我也試過：
WebDriverWait(driver, 60).until(EC.presence_of_elements_located((By.CLASS_NAME, 'course-row normal faculty-BU active'))).click()
我在下面附上了幾行關于如何解決這個問題的任何建議
<tr id="7858101" class="course-row normal faculty-BU active" data-cid="7858101" data-cc="ACTG1P01" data-year="2021" data-session="FW" data-type="UG" data-subtype="UG" data-level="Year1" data-fn2_notes="BB" data-duration="2" data-class_type="ASY" data-course_section="1" data-days=" " data-class_time="" data-room1="ASYNC" data-room2="" data-location="ASYNC" data-location_desc="" data-instructor="Zhang, Xia (Celine)" data-msg="0" data-main_flag="1" data-secondary_type="E" data-startdate="1631073600" data-enddate="1638853200" data-faculty_code="BU" data-faculty_desc="Goodman School of Business">
<td class="arrow"><span class="fa fa-angle-down"></span></td>
<td class="course-code">ACTG 1P01 </td>
<td class="title"><a href="#" data-cc="ACTG1P01" data-cid="7858101">Introduction to Financial Accounting</a> <div class="details-loader" style="display: none;"><span class="fa fa-refresh fa-spin fa-fw"></span></div></td>
<td class="duration">D2</td>
<td class="days"> </td>
<td class="time"> </td>
<!-- <td data-sort-value="1631073600">Sep 08, 2021</td> -->
<!-- <td data-sort-value="1638853200">Dec 07, 2021</td> -->
<td class="type">ASY</td>
<td class="data"><div style="" class="course-details-data">
<div class="description">
<h3>Introduction to Financial Accounting</h3>
<p class="page-intro">Fundamental concepts of financial accounting as related to the balance sheet, income statement and statement of cash flows. Understanding the accounting cycle and routine transactions. Integrates both theoretical and practical application of accounting concepts.</p>
<p><strong>Format:</strong> Lectures, discussion, 3 hours per week.</p>
<p><strong>Restrictions:</strong> open to BAcc majors.</p>
<p><strong>Exclusions:</strong> Completion of this course will replace previous assigned grade and credit obtained in ACTG 1P11, 1P91 and 2P51.</p>
<p><strong>Notes:</strong> Open to Bachelor of Accounting majors. </p>
</div>
<div class="vitals">
<ul>
<li><strong>Duration:</strong> Sep 08, 2021 to Dec 07, 2021</li>
<li>
<strong>Location:</strong> ASYNC </li>
<li><strong>Instructor:</strong> Zhang, Xia (Celine)</li>
<li><strong>Section:</strong> 1</li>
</ul>
</div>
<hr>
</div>
</td>
</tr>
<tr id="3724102" class="course-row normal faculty-BU active" data-cid="3724102" data-cc="ACTG1P01" data-year="2021" data-session="FW" data-type="UG" data-subtype="UG" data-level="Year1" data-fn2_notes="BB" data-duration="2" data-class_type="LEC" data-course_section="2" data-days=" M R " data-class_time="1100-1230" data-room1="GSB306" data-room2="" data-location="GSB306" data-location_desc="" data-instructor="Zhang, Xia (Celine)" data-msg="0" data-main_flag="1" data-secondary_type="E" data-startdate="1631073600" data-enddate="1638853200" data-faculty_code="BU" data-faculty_desc="Goodman School of Business">
<td class="arrow"><span class="fa fa-angle-right"></span></td>
<td class="course-code">ACTG 1P01 </td>
<td class="title"><a href="#" data-cc="ACTG1P01" data-cid="3724102">Introduction to Financial Accounting</a> <div class="details-loader"><span class="fa fa-refresh fa-spin fa-fw"></span></div></td>
<td class="duration">D2</td>
<td class="days">
<table class="coursecal">
<thead>
<tr>
<th class="">S</th>
<th class="active">M</th>
<th class="">T</th>
<th class="">W</th>
<th class="active">T</th>
<th class="">F</th>
<th class="">S</th>
</tr>
</thead>
<tbody>
<tr>
<td class="weekend "></td>
<td class="active"></td>
<td class=""></td>
<td class=""></td>
<td class="active"></td>
<td class=""></td>
<td class="weekend "></td>
</tr>
</tbody>
</table>
</td>
<td class="time">1100-1230</td>
<!-- <td data-sort-value="1631073600">Sep 08, 2021</td> -->
<!-- <td data-sort-value="1638853200">Dec 07, 2021</td> -->
<td class="type">LEC</td>
<td class="data"></td>
</tr>
uj5u.com熱心網友回復：
快到了...您可以使用 方法檢索所有相關 Web 元素的串列driver.find_elements，然后單擊它來遍歷串列中的每個元素。因為course-row normal faculty-BU active實際上是幾個類名，而不是一個類名，所以你應該在那里使用 XPath 或 CSS 選擇器。
另外這里建議使用visibility_of_element_located預期條件，presence_of_elements_located因為即使網頁元素沒有最終呈現在頁面上，而visibility_of_element_located預期條件等待網頁元素的更成熟狀態，也不會滿足前一個條件
WebDriverWait(driver, 60).until(EC.visibility_of_element_located((By.XPATH, '//tr[@class = "course-row normal faculty-BU active"]')))
time.sleep(0.4) #short delay added to make ALL the elements loaded
elements = driver.find_element(By.XPATH, '//tr[@class = "course-row normal faculty-BU active"]')
for element in elements:
element.click()
#scrape the data you need here etc
uj5u.com熱心網友回復：
由于id屬性<tr>具有動態值來識別所有<tr>s 并單擊它們中的每一個，因此您需要為visibility_of_all_elements_located()誘導WebDriverWait并且您需要構建一個動態定位器策略，如下所示：
使用CSS_SELECTOR：
elements = WebDriverWait(driver, 60).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "tr.course-row.normal.faculty-BU.active[data-faculty_desc='Goodman School of Business'] a[data-cc][data-cid]"))) for element in elements: element.click()使用XPATH：
elements = WebDriverWait(driver, 60).until(EC.visibility_of_all_elements_located((By.XPATH, "//tr[@class='course-row normal faculty-BU active' and @data-faculty_desc='Goodman School of Business']//a[@data-cc and @data-cid]"))) for element in elements: element.click()
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