Converts the inputted text value to a standard python value (if possible).

    :param      value | <str> || <unicode>

    :return     <variant>

def safe_eval(value):
    """
    Converts the inputted text value to a standard python value (if possible).

    :param      value | <str> || <unicode>

    :return     <variant>
    """
    if not isinstance(value, (str, unicode)):
        return value

    try:
        return CONSTANT_EVALS[value]
    except KeyError:
        try:
            return ast.literal_eval(value)
        except StandardError:
            return value