如何使用变量lxml xpath传递属性值

Question

我如何将 attrbute 作为变量传递，当我对值进行硬编码时，我得到了结果，但当我分配一个变量时却没有

<rootdata>
<Config id="1A" cId="1A13" name="Confg 13">
    <Assignment _id="id1eF"  of_end_="id1588"/>
    <Assignment _id="id1F0"  of_end_="id1598" />
</Config>

<Config id="2A" cId="2A14" name="Confg 14">
    <Assignment _id="id1eF"  of_end_="id151"/>
    <Assignment _id="id1F0"  of_end_="id152" />
</Config>


<Config id="3A" cId="3A15" name="Confg 14">
    <Assignment _id="id1eF"  of_end_="id153"/>
    <Assignment _id="id1F0"  of_end_="id154" />
</Config>
<ele id="id1ef" name="name1"/>
<ele id="id1f0 name="name2"/>
</rootdata>

tree = ET.parse('data.xml')
root = tree.getroot()


for config in root.findall("./Config/[@cId='1A13']/Assignment"):    

    temp_id=config.attrib['_id']
    temp_of_end=config.attrib['of_end_']
    print(temp_id,tmp_of_end)

当我对 cId 的值进行硬编码时它可以工作，但我想传递一个变量我的 var

for config in root.findall("./Config/[@cId=myvariable]/Assignment"):

Answer 1

尝试如下传递变量：

myvariable = "1A13"
root.findall("./Config/*[@cId='{}']/Assignment".format(myvariable))

如何使用变量lxml xpath传递属性值

how to lxml xpath pass attribute values using variables

xpath

lxml

python-3.7