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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_attribute_by_name(el, name, default=None):
 """Get attribute by name."""


        value = default
        if el._is_xml:
            try:
                value = el.attrs[name]
            except KeyError:
                pass
        else:
            for k, v in el.attrs.items():
                if util.lower(k) == name:
                    value = v
                    break
        return value