def infer_getattr(node, context=None):
    """Understand getattr calls

    If one of the arguments is an Uninferable object, then the
    result will be an Uninferable object. Otherwise, the normal attribute
    lookup will be done.
    """
    obj, attr = _infer_getattr_args(node, context)
    if (
        obj is util.Uninferable
        or attr is util.Uninferable
        or not hasattr(obj, "igetattr")
    ):
        return util.Uninferable

    try:
        return next(obj.igetattr(attr, context=context))
    except (StopIteration, InferenceError, AttributeInferenceError):
        if len(node.args) == 3:
            # Try to infer the default and return it instead.
            try:
                return next(node.args[2].infer(context=context))
            except InferenceError:
                raise UseInferenceDefault

    raise UseInferenceDefault
Understand getattr calls

    If one of the arguments is an Uninferable object, then the
    result will be an Uninferable object. Otherwise, the normal attribute
    lookup will be done.