def pad_left(text: str, pad_char: str = "0", length: int = 2) -> str:
    return text.rjust(length, pad_char)


def pad_right(text: str, pad_char: str = " ", length: int = 10) -> str:
    return text.ljust(length, pad_char)


def is_empty(text: str) -> bool:
    return text is None or text.strip() == ""


def is_not_empty(text: str) -> bool:
    return not is_empty(text)