_function.py 文件源码

def get_integer_digit(value):
    from typepy import TypeConversionError
    from typepy.type import RealNumber

    float_type = RealNumber(value)

    try:
        abs_value = abs(float_type.convert())
    except TypeConversionError:
        raise ValueError(
            "the value must be a number: value='{}' type='{}'".format(
                value, type(value)))

    if abs_value.is_zero():
        return 1

    try:
        return len(str(abs_value.quantize(
            Decimal("1."), rounding=decimal.ROUND_DOWN)))
    except decimal.InvalidOperation as e:
        raise ValueError(e)