无法使用Python从XML文件中获取搜索值

Question

我需要根据用户输入使用python搜索XML表单中的值，但是它会给出空白值。我在下面解释我的代码。

import xml.etree.ElementTree as ET 
tree = ET.parse('roomlist.xml') 
root = tree.getroot() 
print(root.findall(".//*[@roomname=\"cottage\"]")) 

我的XML文件如下。

<?xml version="1.0" ?><roomlist> 
    <location name="Bangalore"> 
    <room id="1uy92j908u092"> 
     <roomname> Aquarius </roomname> 
     <noseats> 10 </noseats> 
     <projectorscreen>yes</projectorscreen> 
     <videoconf>yes</videoconf> 
    </room> 
    </location> 
<location name="Bhubaneswar"><room id="131198912460"><roomname>cottage</roomname><noseats>5</noseats><projectorscreen>Yes</projectorscreen><videoconf>Yes</videoconf></room></location><location name="puri"><room id="509955554930"><roomname>room1</roomname><noseats>10</noseats><projectorscreen>No</projectorscreen><videoconf>Yes</videoconf></room></location></roomlist> 

这里没有数据来。在这里，我需要搜索所有数据后应推入一个数组。

Answer 1

您可以遍历象下面这样在你的XML值：

for roomname in root.iter('roomname'): 
    print(roomname.text) 

这样你就可以检查它是否有太多

for roomname in root.iter('roomname'): 
    if roomname.text == 'cottage': 
     print(roomname.text) 

追加名列表：

lst = [] 
for roomname in root.iter('roomname'): 
    lst.append(roomname.text) 

在你的情况下，你需要深入遍历树。下面将进入房间节点的属性

for child in root: 
    for attr in child.find('room'): 
     print(attr) 

将输出

<Element 'roomname' at 0x7f9c064d5090> 
<Element 'noseats' at 0x7f9c064d50d0> 
<Element 'projectorscreen' at 0x7f9c064d5150> 
<Element 'videoconf' at 0x7f9c064d5190> 
<Element 'roomname' at 0x7f9c064d5250> 
<Element 'noseats' at 0x7f9c064d5290> 
<Element 'projectorscreen' at 0x7f9c064d52d0> 
<Element 'videoconf' at 0x7f9c064d5310> 
<Element 'roomname' at 0x7f9c064d53d0> 
<Element 'noseats' at 0x7f9c064d5410> 
<Element 'projectorscreen' at 0x7f9c064d5450> 
<Element 'videoconf' at 0x7f9c064d5490> 

可以使用的.text的元素创建字典或者列出你需要

另外：https://docs.python.org/3/library/xml.etree.elementtree.html

祝你好运