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POHow can this function be rewritten to implement OrderedDict?
 

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  1. POHow can this function be rewritten to implement OrderedDict?
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    <p>I have the following function which does a crude job of parsing an XML file into a dictionary.</p> <p>Unfortunately, since Python dictionaries are not ordered, I am unable to cycle through the nodes as I would like.</p> <p>How do I change this so it outputs an ordered dictionary which reflects the original order of the nodes when looped with 'for'.</p> <pre><code>def simplexml_load_file(file): import collections from lxml import etree tree = etree.parse(file) root = tree.getroot() def xml_to_item(el): item = None if el.text: item = el.text child_dicts = collections.defaultdict(list) for child in el.getchildren(): child_dicts[child.tag].append(xml_to_item(child)) return dict(child_dicts) or item def xml_to_dict(el): return {el.tag: xml_to_item(el)} return xml_to_dict(root) x = simplexml_load_file('routines/test.xml') print x for y in x['root']: print y </code></pre> <p>Outputs:</p> <pre class="lang-none prettyprint-override"><code>{'root': { 'a': ['1'], 'aa': [{'b': [{'c': ['2']}, '2']}], 'aaaa': [{'bb': ['4']}], 'aaa': ['3'], 'aaaaa': ['5'] }} a aa aaaa aaa aaaaa </code></pre> <p>How can i implement collections.OrderedDict so that I can be sure of getting the correct order of the nodes?</p> <p>XML file for reference:</p> <pre class="lang-xml prettyprint-override"><code>&lt;root&gt; &lt;a&gt;1&lt;/a&gt; &lt;aa&gt; &lt;b&gt; &lt;c&gt;2&lt;/c&gt; &lt;/b&gt; &lt;b&gt;2&lt;/b&gt; &lt;/aa&gt; &lt;aaa&gt;3&lt;/aaa&gt; &lt;aaaa&gt; &lt;bb&gt;4&lt;/bb&gt; &lt;/aaaa&gt; &lt;aaaaa&gt;5&lt;/aaaaa&gt; &lt;/root&gt; </code></pre>
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    1. COduplicate of http://stackoverflow.com/questions/4123266/python-looping-seems-to-not-follow-sequence by same author.
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      1. POHow can this function be rewritten to implement OrderedDict?
      1. USSteven Rumbalski
 

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