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consume xml from RestFul webservices

/ Published in: Python
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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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  1. # Try to use the C implementation first, falling back to python
  2. try:
  3.     from xml.etree import cElementTree as ElementTree
  4. except ImportError, e:
  5.     from xml.etree import ElementTree
  6.  
  7. ##########
  8.  
  9. def find(*args, **kwargs):
  10.     """Find a book in the collection specified"""
  11.  
  12.     search_args = [('access_key', api_key),]
  13.     if not is_valid_collection(kwargs['collection']):
  14.         return None
  15.     kwargs.pop('collection')
  16.     for key in kwargs:
  17.         # Only the first keword is honored
  18.         if kwargs[key]:
  19.             search_args.append(('index1', key))
  20.             search_args.append(('value1', kwargs[key]))
  21.             break
  22.  
  23.     url = urllib.basejoin(api_url, '%s.xml' % 'books')
  24.     data = urllib.urlencode(search_args)
  25.     req = urllib2.urlopen(url, data)
  26.     rdata = []
  27.     chunk = 'xx'
  28.     while chunk:
  29.         chunk = req.read()
  30.         if chunk:
  31.             rdata.append(chunk)
  32.     tree = ElementTree.fromstring(''.join(rdata))
  33.     results = []
  34.     for i, elem in enumerate(tree.getiterator('BookData')):
  35.         results.append(
  36.                {'isbn': elem.get('isbn'),
  37.                 'isbn13': elem.get('isbn13'),
  38.                 'title': elem.find('Title').text,
  39.                 'author': elem.find('AuthorsText').text,
  40.                 'publisher': elem.find('PublisherText').text,}
  41.              )
  42.     return results

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

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