def _is_numpy_nan(node):
    if (isinstance(node, astroid.Attribute) and (node.attrname == 'NaN')):
        if isinstance(node.expr, astroid.Name):
            return (node.expr.name in ('numpy', 'nmp', 'np'))
    return False
def _is_numpy_nan(node):
    if (isinstance(node, astroid.Attribute) and (node.attrname == 'NaN')):
        if isinstance(node.expr, astroid.Name):
            return (node.expr.name in ('numpy', 'nmp', 'np'))
    return False