__init__.py

import math
import uuid
from typing import Any


def is_uuid(value: Any) -> bool:
    try:
        uuid.UUID(str(value))
        return True
    except ValueError:
        return False


def round_decimals_down(number: float, decimals: int = 2) -> float:
    """
    Returns a value rounded down to a specific number of decimal places.
    """
    if not isinstance(decimals, int):
        raise TypeError("decimal places must be an integer")
    elif decimals < 0:
        raise ValueError("decimal places has to be 0 or more")
    elif decimals == 0:
        return math.floor(number)

    factor = 10**decimals
    return math.floor(number * factor) / factor