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magicrebirth on 03/11/10

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Last Edited at 03/11/10 02:01am

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consume xml from RestFul webservices

/ Published in: Python

ElementTree is provided as part of the standard Python libs. ElementTree is pure python, and cElementTree is the faster C implementation:

Here's an example usage, where I'm consuming xml from a RESTful web service:

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# Try to use the C implementation first, falling back to python
try:
    from xml.etree import cElementTree as ElementTree
except ImportError, e:
    from xml.etree import ElementTree

##########

def find(*args, **kwargs):
    """Find a book in the collection specified"""

search_args = [('access_key', api_key),]
    if not is_valid_collection(kwargs['collection']):
        return None
    kwargs.pop('collection')
    for key in kwargs:
        # Only the first keword is honored
        if kwargs[key]:
            search_args.append(('index1', key))
            search_args.append(('value1', kwargs[key]))
            break

url = urllib.basejoin(api_url, '%s.xml' % 'books')
    data = urllib.urlencode(search_args)
    req = urllib2.urlopen(url, data)
    rdata = []
    chunk = 'xx'
    while chunk:
        chunk = req.read()
        if chunk:
            rdata.append(chunk)
    tree = ElementTree.fromstring(''.join(rdata))
    results = []
    for i, elem in enumerate(tree.getiterator('BookData')):
        results.append(
               {'isbn': elem.get('isbn'),
                'isbn13': elem.get('isbn13'),
                'title': elem.find('Title').text,
                'author': elem.find('AuthorsText').text,
                'publisher': elem.find('PublisherText').text,}
             )
    return results

URL: http://stackoverflow.com/questions/804992/how-to-consume-xml-from-restful-web-services-using-django-python

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