[英]Display the contents of an element in xml using python
etree to display my xml file, and works great for displaying the attributes of a particular element, but now I need to display the contents of an element. etree显示我的xml文件,非常适合显示特定元素的属性,但现在我需要显示元素的内容。
Input xml 输入xml
<root>
<Module>
<register name="i_cmd_reg" offset="0x004" width="20" access="R/W" >
<field name="value" default="0" bit_span="20">
<description>System gradient driver current command - 1.72mA/LSB</description>
</field>
</register>
<register name="i_ecc_cmd_reg" offset="0x008" width="20" access="R/W" >
<description>Calculated ECC current command - 1.72mA/LSB</description>
<field name="field1"/>
</register>
</Module>
</root>
Python code Python代码
from lxml import etree
xml_file = etree.parse('file1.xml')
input_1=open("sample_template.txt","r")
output=open("output.txt","w+")
i=0
k=0
for node in input_file.iter():
if node.tag=="register":
register[i]['name']=node.attrib.get("name")
register[i]['offset']=node.attrib.get("offset")
k=0
for child_node in node:
if child_node.tag=="field":
register[i]['fields'][k]['name']=child_node.attrib.get("name")
register[i]['fields'][k]['offset']=child_node.attrib.get("offset")
k+=1
My question is how can I store the contents of the description element, in a say a string variable? 我的问题是如何存储description元素的内容,比如说一个字符串变量? I just need to access the data in the description element. 我只需要访问description元素中的数据。
like name=child_node.tag("description") 喜欢name = child_node.tag(“description”)
Thanks! 谢谢!
You can do it by: 你可以这样做:
Code: 码:
import xml.etree.ElementTree as ET
tree = ET.parse('file.xml')
root = tree.getroot()
for child in root.iter('register'):
name = child.attrib.get('name', None)
offset = child.attrib.get('offset', None)
width = child.attrib.get('width', None)
access = child.attrib.get('access', None)
description = child.find('description')
if description is not None:
desc = description.text
else:
desc = child.find('field').find('description').text
print "[*] Register Name: {}".format(name)
print "[*] Register Offset: {}".format(offset)
print "[*] Register Width: {}".format(width)
print "[*] Register Access: {}".format(access)
print "[*] Description: {}".format(desc)
print ""
Another code with etree from lxml : 来自lxml的 etree的另一个代码:
from lxml import etree
with open('file.xml') as xml_file:
tree = etree.fromstring(xml_file.read())
for child in tree.xpath('//root/Module/register'):
name = ''.join(child.xpath('./@name'))
offset = ''.join(child.xpath('./@offset'))
width = ''.join(child.xpath('./@width'))
access = ''.join(child.xpath('./@access'))
description = ''.join(child.xpath('.//description/text()'))
print "[*] Register Name: {}".format(name)
print "[*] Register Offset: {}".format(offset)
print "[*] Register Width: {}".format(width)
print "[*] Register Access: {}".format(access)
print "[*] Description: {}".format(description)
print ""
Output is the same for both examples: 两个示例的输出相同:
[*] Register Name: i_cmd_reg
[*] Register Offset: 0x004
[*] Register Width: 20
[*] Register Access: R/W
[*] Description: System gradient driver current command - 1.72mA/LSB
[*] Register Name: i_ecc_cmd_reg
[*] Register Offset: 0x008
[*] Register Width: 20
[*] Register Access: R/W
[*] Description: Calculated ECC current command - 1.72mA/LSB
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