def _cast_to_pod(val):
    """Try cast to int, float, bool, str, in that order."""
    bools = {'True': True, 'False': False}
    if val in bools:
        return bools[val]
    try:
        return int(val)
    except ValueError:
        try:
            return float(val)
        except ValueError:
            return str(val)
