Hi All,<div><br></div><div>I&#39;m trying to use getpath() to get the absolute xpath for an element in a tree. This works fine when all namespaces have consistent prefixes in the document. However when I deal with a document in which the same namespace can have multiple prefixes I get wrong path. I wrote this little script to re-produce the error.</div>
<div><br></div><div><br></div><div><div>#!/usr/bin/env python</div><div>from lxml import etree</div><div>from StringIO import StringIO</div><div><br></div><div><br></div><div>def generate_sample_tree_with_multiple_prefixes():</div>
<div>    root = etree.Element(&#39;root&#39;, nsmap={&#39;a&#39;: &#39;<a href="http://a.b/c&#39;">http://a.b/c&#39;</a>})</div><div>    for x in range(10):</div><div>        ns = &quot;<a href="http://ns.org/ns/">http://ns.org/ns/</a>&quot;</div>
<div>        prefix = &#39;l_%s&#39; % x</div><div>        node = etree.SubElement(root, &quot;{%s}l1&quot; % ns, nsmap={prefix: ns})</div><div>        node.set(&#39;id&#39;, &#39;id_%s&#39; % x)</div><div>    return etree.parse(StringIO(etree.tostring(root)))</div>
<div><br></div><div><br></div><div><br></div><div>def generate_sample_tree_with_single_prefixes():</div><div>    root = etree.Element(&#39;root&#39;, nsmap={&#39;a&#39;: &#39;<a href="http://a.b/c&#39;">http://a.b/c&#39;</a>})</div>
<div>    for x in range(10):</div><div>        ns = &quot;<a href="http://ns.org/ns/">http://ns.org/ns/</a>&quot;</div><div>        prefix = &#39;ns&#39;</div><div>        node = etree.SubElement(root, &quot;{%s}l1&quot; % ns, nsmap={prefix: ns})</div>
<div>        node.set(&#39;id&#39;, &#39;id_%s&#39; % x)</div><div>    return etree.parse(StringIO(etree.tostring(root)))</div><div><br></div><div><br></div><div>def test_multiple():</div><div>    tree = generate_sample_tree_with_multiple_prefixes()</div>
<div>    r = tree.getroot()</div><div>    for l1 in r.iterchildren():</div><div>        path = tree.getpath(l1)</div><div>        ret = tree.xpath(path, namespaces=l1.nsmap)</div><div>        assert len(ret) == 1, &quot;Multiple elements returned: %s&quot; % ret</div>
<div>        assert l1 == ret[0], &quot;It&#39;s not the same&quot;</div><div><br></div><div><br></div><div>def test_single():</div><div>    tree = generate_sample_tree_with_single_prefixes()</div><div>    r = tree.getroot()</div>
<div>    for l1 in r.iterchildren():</div><div>        path = tree.getpath(l1)</div><div>        ret = tree.xpath(path, namespaces=l1.nsmap)</div><div>        assert len(ret) == 1, &quot;Multiple elements returned&quot;</div>
<div>        assert l1 == ret[0], &quot;It&#39;s not the same&quot;</div><div><br></div><div><br></div><div>if __name__ == &#39;__main__&#39;:</div><div>    test_single()</div><div>    test_multiple()</div><div><br></div>
<div><br></div><div><br></div><div><br></div><div>thanks</div>-- <br>-Ahmed<br><br><br>
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