Question

我也可以使用正确的XPATH来提取tr id =“ review_”元素吗？我设法获取了元素，但是很幸运地发现了ID，因为它们是部分匹配项

<table class="admin">
<thead>"snip"</thead>
<tbody>
    <tr id="review_984669" class="">
    <td>weird_wild_and_wonderful_mammals</td>
    <td>1</td>
    <td><input type="checkbox" name="book_review[approved]" id="approved" value="1" class="attribute_toggle"></td>
    <td><input type="checkbox" name="book_review[rejected]" id="rejected" value="1" class="attribute_toggle"></td>
    <td>February 27, 2019 03:56</td>
    <td><a href="/admin/new_book_reviews/984669?page=2">Show</a></td>
    <td>
        <span class="rest-in-place" data-attribute="review" data-object="book_review" data-url="/admin/new_book_reviews/984669">
bad
        </span>
    </td>
    </tr>
    <tr id="review_984670" class="striped">

我将Selenium与Chrome一起使用来提取页面上的唯一表格。

Table_Selenium_Elements = driver.find_element_by_xpath('//*[@id="admin"]/table')

然后我使用下面的方法从每一行获取数据。

for Pri_Key, element in enumerate(Table_Selenium_Elements.find_elements_by_xpath('.//tr')):
# Create an empty secondary dict for each new Pri Key
    sec = {}
    # Secondary dictionary needs a Key. Keys are items in column_headers list
    for counter, Sec_Key in enumerate(column_headers):
        # Secondary dictionary needs Values for each key.
        # Values are individual items in each sub-list of column_data list
        # Slice the sub list with the counter to get each item
        sec[Sec_Key] = element.get_attribute('innerHTML')[counter]
    pri[Pri_Key] = sec

这仅显示了每个 “ weird_wild_and_wonderful_mammals”，“ 1”

但是我实际上也需要tr id = review_xxx。我不知道该怎么做。 ID编号会发生变化，因此可能是xpath“包含”表达式或xpath“ begins_with”表达式。

由于我是菜鸟，所以我想我已经捕获了review_ID，但我无法通过for循环正确提取。

有人可以告诉我正确的XPATH来提取父tr和子tds。 ...然后我将调整for循环。谢谢山姆

Answer 1

您只是要一个xPath来定位表元素本身吗？

在您的示例中，您有一个xPath查找您拥有的表

[@id="admin"]

'admin'是类，而不是ID。如果您简单地将其切换为

，是否可以正常工作

Table_Selenium_Elements = driver.find_element_by_xpath('//*[@id="admin"]/table')

Answer 2

基于带有以下选择器示例的html，您可以获得所有行：

admin_table_rows = driver.find_elements_by_css_selector(".admin tbody > tr")
admin_table_rows = driver.find_elements_by_css_selector(".admin tr[id^='review_']")
admin_table_rows = driver.find_elements_by_xpath("//table[@class='admin']//tr[starts-with(@id,'review_')]")

要获取id属性，可以使用element.get_attribute("id")方法。

以下示例如何抓取数据：

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

wait = WebDriverWait(driver, 10)

admin_table_rows = wait.until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, ".admin tr[id^='review_']")))

for row in admin_table_rows:
    row_id = row.get_attribute("id").replace("review_", "")
    label = row.find_element_by_css_selector("td:nth-child(1)")
    num = row.find_element_by_css_selector("td:nth-child(2)")
    date = row.find_element_by_css_selector("td:nth-child(3)")
    href = row.find_element_by_css_selector("a").get_attribute("href")

Answer 3

driver.find_element_by_class_name('striped')

或

# If it is the last row in the table.
driver.find_elements_by_css_selector('tbody tr')[-1]

或

# If it is surely the 2nd row in the table.
driver.find_elements_by_css_selector('tbody tr')[1]

XPATH与Python，Selenium，

3 个答案: