Convert an lxml.etree node tree into an object.

elem2dict.py

def elem2dict(node):
    """
    Convert an lxml.etree node tree into an object.
    Notice: Since the xml and object (json) structure is not the same, 
    this utils will not work correctly if there is an xml element that 
    contains multiple duplicate child elements. For example:
    <root>
        <name>Hello</name>
        <name>Is it me</name>
        <hello>You looking for</hello>
    </root>
    There are 2 tags <name> and one tag <hello>, therefore this utils
    do not know if it should convert <root> to an object or an array, 
    it will return a wrong value.
    {
        root: [
            "Hello",
            "Is it me",
            "You looking for"
        ]
    }
    @see: https://gist.github.com/trungdq88/6685f22d4c56bed04cb3
    :param node:
    """
    d = {}
    for e in node.iterchildren():
        key = e.tag.split('}')[1] if '}' in e.tag else e.tag
        value = e.text if len(e) == 0 else elem2dict(e)
        if isinstance(d, list):
            d.append(value)
        else:
            if key in d:
                d = [d[key], value]
            else:
                d[key] = value
    return d