How to Validate an XML File in Python

While there are various built-in Python libraries available for performing XML file validation, those libraries tend to rely on a variety of local server resources to carry out a fully-fledged validation check. If you’re looking for a quick, all-in-one solution for validating XML files in your Python application, the below API solution will get the job done. This API will return a Boolean indicating if the files are valid or invalid, and if the latter is found to be true, it’ll provide a list of errors and warnings for your reference. It’ll also identify if the file is password protected, which is important to know.

We can begin calling this API by first running the following command (to install the Python SDK):

pip install cloudmersive-convert-api-client

After that, we can include the rest of the code, beginning with the imports:

from __future__ import print_function
import time
import cloudmersive_convert_api_client
from cloudmersive_convert_api_client.rest import ApiException
from pprint import pprint

# Configure API key authorization: Apikey
configuration = cloudmersive_convert_api_client.Configuration()
configuration.api_key['Apikey'] = 'YOUR_API_KEY'



# create an instance of the API class
api_instance = cloudmersive_convert_api_client.ValidateDocumentApi(cloudmersive_convert_api_client.ApiClient(configuration))
input_file = '/path/to/inputfile' # file | Input file to perform the operation on.

try:
    # Validate an XML file
    api_response = api_instance.validate_document_xml_validation(input_file)
    pprint(api_response)
except ApiException as e:
    print("Exception when calling ValidateDocumentApi->validate_document_xml_validation: %s\n" % e)

Now, all that’s left to do is complete our API call with a valid Cloudmersive API key (you can get one for free by registering a free account on our website). After that, you’re all done!