如何通过python webdriver查找父元素？
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How to find parent elements by python webdriver?
提问by Stella
Is there any methods for python+selenium to find parent elements, brother elements, or child elements just like
python+selenium 有没有什么方法可以找到父元素、兄弟元素或子元素，就像
driver.find_element_parent?ordriver.find_element_next?ordriver.find_element_previous?
driver.find_element_parent?或driver.find_element_next?或driver.find_element_previous?
eg:
例如：
<tr>
<td>
<select>
<option value=0, selected='selected'> </option>
<option value=1, > </option>
<option value=2,> </option>
</select>
</td>
<td> 'abcd'
<input name='A'> </input>
<td>
<tr>
I've tried like below, but fail:
我试过如下，但失败了：
input_el=driver.find_element_by_name('A')
td_p_input=find_element_by_xpath('ancestor::input')
How can I get the parent of input elementand then, finally, get the option selected?
如何获取输入元素的父元素，然后最后选择选项？
采纳答案by alecxe
You can find a parent element by using ..xpath:
您可以使用..xpath查找父元素：
input_el = driver.find_element_by_name('A')
td_p_input = input_el.find_element_by_xpath('..')
What about making a separate xpath for getting selected option, like this:
为选择选项制作一个单独的 xpath 怎么样，像这样：
selected_option = driver.find_element_by_xpath('//option[@selected="selected"]')
回答by drkthng
From your example I figure you only want the selected option within a table-row if and only if this row also has an input element with the name "A", no matter where in the html-tree this element resides below the row-element.
从您的示例中，我认为您只需要表格行中的选定选项，当且仅当该行也有一个名为“A”的输入元素时，无论该元素在 html-tree 中的哪个位置位于行元素下方.
You can achieve this via the xpath ancestor-axis.
您可以通过 xpath 祖先轴实现此目的。
For the sake of better readability I will show how to do this step by step (but you can actually put everything in only one xpath-expression):
为了更好的可读性，我将逐步展示如何执行此操作（但实际上您可以将所有内容都放在一个 xpath 表达式中）：
// first find your "A" named element
namedInput = driver.find_element_by_name("A");
// from there find all ancestors (parents, grandparents,...) that are a table row 'tr'
rowElement = namedInput.find_element_by_xpath(".//ancestor::tr");
// from there find the first "selected" tagged option
selectedOption = rowElement.find_element_by_xpath(".//option[@selected='selected']");
回答by Parth Naik
One of the possible ways to navigate to element under same hierarchy is to use /../in xpath as shown below:
导航到同一层次结构下的元素的一种可能方法是/../在 xpath 中使用，如下所示：
current_element = driver.find_element_by_xpath('//android.view.ViewGroup/android.widget.RelativeLayout/android.widget.TextView[@text="Current element text"]/../android.widget.TextView[@text="Next element text"]')
Here it will:
在这里它将：
- Firstly navigate to
android.widget.TextView[@text = "Current element text"] - Then it will go back to parent element i.e
android.widget.RelativeLayoutand select the nextandroid.widget.TextView[@text="Next element text"]under the same hierarchy.
- 首先导航到
android.widget.TextView[@text = "Current element text"] - 然后它将返回到父元素，即
android.widget.RelativeLayout选择android.widget.TextView[@text="Next element text"]同一层次结构下的下一个元素。
