How to use the pythainlp.util.numtoword.num_to_thaiword function in pythainlp

def _format_6h(h: int) -> str:
    """Thai time (6-hour clock)."""
    text = ""

    if h == 0:
        text += "เที่ยงคืน"
    elif h < 7:
        text += "ตี" + num_to_thaiword(h)
    elif h < 12:
        text += num_to_thaiword(h - 6) + "โมงเช้า"
    elif h == 12:
        text += "เที่ยง"
    elif h < 18:
        if h == 13:
            text += "บ่ายโมง"
        else:
            text += "บ่าย" + num_to_thaiword(h - 12) + "โมง"
    elif h == 18:
        text += "หกโมงเย็น"
    else:
        text += num_to_thaiword(h - 18) + "ทุ่ม"

    return text

elif fmt == "m6h":
        text = _format_m6h(h)
    elif fmt == "24h":
        text = _format_24h(h)
    else:
        raise NotImplementedError(fmt)

    if precision == "m" or precision == "s":
        if (
            m == 30
            and (s == 0 or precision == "m")
            and (fmt == "6h" or fmt == "m6h")
        ):
            text += "ครึ่ง"
        else:
            text += num_to_thaiword(m) + "นาที"
            if precision == "s":
                text += num_to_thaiword(s) + "วินาที"
    else:
        if m:
            if m == 30 and s == 0 and (fmt == "6h" or fmt == "m6h"):
                text += "ครึ่ง"
            else:
                text += num_to_thaiword(m) + "นาที"
        if s:
            text += num_to_thaiword(s) + "วินาที"

    return text

def _format_6h(h: int) -> str:
    """Thai time (6-hour clock)."""
    text = ""

    if h == 0:
        text += "เที่ยงคืน"
    elif h < 7:
        text += "ตี" + num_to_thaiword(h)
    elif h < 12:
        text += num_to_thaiword(h - 6) + "โมงเช้า"
    elif h == 12:
        text += "เที่ยง"
    elif h < 18:
        if h == 13:
            text += "บ่ายโมง"
        else:
            text += "บ่าย" + num_to_thaiword(h - 12) + "โมง"
    elif h == 18:
        text += "หกโมงเย็น"
    else:
        text += num_to_thaiword(h - 18) + "ทุ่ม"

    return text

def _format_m6h(h: int) -> str:
    """Thai time (modified 6-hour clock)."""
    text = ""

    if h == 0:
        text += "เที่ยงคืน"
    elif h < 6:
        text += "ตี" + num_to_thaiword(h)
    elif h < 12:
        text += num_to_thaiword(h) + "โมง"
    elif h == 12:
        text += "เที่ยง"
    elif h < 19:
        text += num_to_thaiword(h - 12) + "โมง"
    else:
        text += num_to_thaiword(h - 18) + "ทุ่ม"

    return text

def _format_24h(h: int) -> str:
    """Thai time (24-hour clock)."""
    text = num_to_thaiword(h) + "นาฬิกา"
    return text

elif fmt == "24h":
        text = _format_24h(h)
    else:
        raise NotImplementedError(fmt)

    if precision == "m" or precision == "s":
        if (
            m == 30
            and (s == 0 or precision == "m")
            and (fmt == "6h" or fmt == "m6h")
        ):
            text += "ครึ่ง"
        else:
            text += num_to_thaiword(m) + "นาที"
            if precision == "s":
                text += num_to_thaiword(s) + "วินาที"
    else:
        if m:
            if m == 30 and s == 0 and (fmt == "6h" or fmt == "m6h"):
                text += "ครึ่ง"
            else:
                text += num_to_thaiword(m) + "นาที"
        if s:
            text += num_to_thaiword(s) + "วินาที"

    return text

if (
            m == 30
            and (s == 0 or precision == "m")
            and (fmt == "6h" or fmt == "m6h")
        ):
            text += "ครึ่ง"
        else:
            text += num_to_thaiword(m) + "นาที"
            if precision == "s":
                text += num_to_thaiword(s) + "วินาที"
    else:
        if m:
            if m == 30 and s == 0 and (fmt == "6h" or fmt == "m6h"):
                text += "ครึ่ง"
            else:
                text += num_to_thaiword(m) + "นาที"
        if s:
            text += num_to_thaiword(s) + "วินาที"

    return text

"""Thai time (6-hour clock)."""
    text = ""

    if h == 0:
        text += "เที่ยงคืน"
    elif h < 7:
        text += "ตี" + num_to_thaiword(h)
    elif h < 12:
        text += num_to_thaiword(h - 6) + "โมงเช้า"
    elif h == 12:
        text += "เที่ยง"
    elif h < 18:
        if h == 13:
            text += "บ่ายโมง"
        else:
            text += "บ่าย" + num_to_thaiword(h - 12) + "โมง"
    elif h == 18:
        text += "หกโมงเย็น"
    else:
        text += num_to_thaiword(h - 18) + "ทุ่ม"

    return text