[Python知识库]Read xml file example(Minidom)

XML stands for Extensible Markup Language?and like HTML, it is also a markup language. In XML, however, we do not use predefined tags but here we can use our own custom tags based on the data we are storing in the XML file.

An XML document is frequently used to share, store, and design information since it can undoubtedly be moved among servers and frameworks. We as a whole know with regards to information, Python is one of the most amazing programming languages to measure and parse.

Fortunately, Python accompanies a Standard XML module that can parse XML documents in Python and furthermore compose information in the XML record. This is called Python XML Parser.

In this?parsing XML in python?blog, we will stroll through the Python XML minidom and ElemetnTree modules, and figure out how to parse an XML document in Python.

Python XML?minidom?and?ElementTree?module

The Python XML module support two sub-modules minidom and ElementTreeto parse an XML record in Python.

The minidom or Minimal DOM module gives a DOM (Document Object Model) like construction to parse the XML record, which is like the DOM design of JavaScript.

Despite the fact that we can parse an XML record utilizing minidom, ElementTree gives a greatly improved Pythonic approach to parse an XML document in Python.

XML File

For every one of the models in this instructional exercise, we will utilize the demo.xmlfile, which contains the accompanying XML information:

#demo.xml

<item>
    <record>
        <name>Jameson</name>
        <phone>(080) 78168241</phone>   
        <email>cursus.in.hendrerit@ipsumdolor.edu</email>
        <country>South Africa</country>
    </record>

    <record>
        <name>Colton</name>
        <phone>(026) 53458662</phone>
        <email>non@idmagna.ca</email>
        <country>Libya</country>
    </record>

    <record>
        <name>Dillon</name>
        <phone>(051) 96790901</phone>
        <email>Aliquam.ornare@Etiamlaoreetlibero.ca</email>
        <country>Madagascar</country>
    </record>
  
    <record>
        <name>Channing</name>
        <phone>(014) 98829753</phone>
        <email>faucibus.Morbi.vehicula@aliquamarcu.co.uk</email>
        <country>Korea, South</country>
    </record>
</item>

In the above example, you can see that the data is nested under custom <tags>. The root tag is <item>, which has <record> as a nested tag, which further has 4 more nested tags:

1. <name>,
2. <phone>,
3. <email>, and
4. <country>

Parse/Read XML Document in Python using minidom

minidom?is the submodule of the Python standard XML?module, which means you do not have to pip install XML to use?minidom.

The?minidom?module?parses the XML document?in a Document Object Model(DOM), whose data can further be extracted using the?getElemetsByTagName()function.

Syntax:

from xml.dom import minidom  minidom.parse("filename")

Example:

Let’s grab all the names and phone data from our demo.xml file.

from xml.dom import minidom


#parse xml file
file = minidom.parse('demo.xml')

#grab all <record> tags
records = file.getElementsByTagName("record")

print("Name------>Phone")

for record in records:
    #access <name> and <phone> node of every record
    name = record.getElementsByTagName("name")
    phone = record.getElementsByTagName("phone")
    
    #access data of name and phone
    print(name[0].firstChild.data, end="----->")
    print(phone[0].firstChild.data)

Output

Name------>Phone
Jameson----->(080) 78168241
Colton----->(026) 53458662
Dillon----->(051) 96790901
Channing----->(014) 98829753

Conclusion

That summarizes this tutorial on Python XML Parser. As should be obvious, Python gives an inbuild Standard XML module to peruse and parse XML records in Python. It by and large has 2 submodules that can parse an XML document:

• minidom and
• ElementTree

The minidom module follows the Document Object Model way to deal with parsing an XML record. Then again, the ElementTree module follows the tree-like construction to parse the XML record.