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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 _obj_getattr(obj, fqdn, start=1):
 """Returns the attribute specified by the fqdn list from obj. """

    node = obj
    for chain in fqdn.split('.')[start:]:
        if hasattr(node, chain):
            node = getattr(node, chain)
        else:
            node = None
            break
    return node