在每个元素匹配特定 class 名称后获取下一个元素

Question

设置

我有以下 html table,

<table>
    <tbody>
        <tr class="order-activ_order_delivered">
        <tr class="tracking-url tracking-url-activ_order_delivered">
        <tr class="order-activ_order_delivered">
        <tr class="tracking-url tracking-url-activ_order_delivered">
        <tr class="order-activ_order_delivered">
        <tr class="tracking-url tracking-url-activ_order_delivered">
        <tr class="order-complete">
        <tr class="empty-tracking-url order-complete">
        <tr class="order-activ_order_delivered">
        <tr class="tracking-url tracking-url-activ_order_delivered">
        <tr class="order-activ_order_delivered">
        <tr class="tracking-url tracking-url-activ_order_delivered">
        <tr class="order-complete">
        <tr class="empty-tracking-url order-complete">
    <tbody>
</table>

我只需要 class 名称 "order-activ_order_delivered" 和 "tracking-url tracking-url-activ_order_delivered".

行中的信息

此外，任何"order-activ_order_delivered"行的信息都与随后的"tracking-url tracking-url-activ_order_delivered"行有关。

到目前为止的代码

下面的循环获取每个 "order-activ_order_delivered",

order_table = el_css(browser,'#my-orders-table > tbody')

for order in order_table.find_elements(By.CSS_SELECTOR,
                           "tr[class^='order-activ_order_delivered']"):
    #code to get data from row

问题

要获取我尝试的后续 "tracking-url tracking-url-activ_order_delivered" 行的信息，

for order in order_table.find_elements(By.CSS_SELECTOR,
                           "tr[class^='order-activ_order_delivered']"):
    
    order_table.find_elements(By.CSS_SELECTOR,
                           "tr[class^='order-activ_order_delivered']/following-sibling::tr")

但这给出了 InvalidSelectorException: invalid selector: An invalid or illegal selector was specified (Session info: chrome=100.0.4896.127)

要么是因为您不能在 CSS_SELECTOR 上使用 following-sibling，要么是因为其他原因。

如何从后续 "tracking-url tracking-url-activ_order_delivered" 行中获取？

Answer 1

following-sibling 不是 CSS_Selector 语法，它是 xpath 语法。

您的代码应该像识别特定元素然后使用 xpath 检查 following-sibling

 for order in order_table.find_elements(By.CSS_SELECTOR,
                           "tr[class^='order-activ_order_delivered']"):

      nextelement=order.find_element(By.XPATH, "./following-sibling::tr[@class='tracking-url tracking-url-activ_order_delivered']")

或

for order in order_table.find_elements(By.CSS_SELECTOR,
                               "tr[class^='order-activ_order_delivered']"):
    
          nextelement=order.find_element(By.XPATH, "./following-sibling::tr[1]")

如果想使用 css selector 可以使用这个 return 所有 tracking-url.

tr[class^='order-activ_order_delivered']+tr.tracking-url.tracking-url-activ_order_delivered

代码：

for order in order_table.find_elements(By.CSS_SELECTOR,
                           "tr[class^='order-activ_order_delivered']+tr.tracking-url.tracking-url-activ_order_delivered"):
    nextelement=order

在每个元素匹配特定 class 名称后获取下一个元素

Get next element with after each element matching a specific class name

python

selenium

xpath

css-selectors

element