Code Challenge: word representation to number conversion

challenge.py

ONES = {
    "one": 1,
    "two": 2,
    "three": 3,
    "four": 4,
    "five": 5,
    "six": 6,
    "seven": 7,
    "eight": 8,
    "nine": 9,
}

TEENS = {
    "ten": 10,
    "eleven": 11,
    "twelve": 12,
    "thirteen": 13,
    "fourteen": 14,
    "fifteen": 15,
    "sixteen": 16,
    "seventeen": 17,
    "eighteen": 18,
    "ninteen": 19,
}

TENS = {
    "twenty": 20,
    "thirty": 30,
    "fourty": 40,
    "fifty": 50,
    "sixty": 60,
    "seventy": 70,
    "eighty": 80,
    "ninety": 90,
}

HUNDRED = "hundred"

DECIMALS = {
    "thousand": 1_000,
    "million": 1_000_000,
}

def from_words(words):
    total = 0
    hundreds_part = 0
    state = 0
    for word in words:
        if state == 0:
            if word in ONES:
                hundreds_part = ONES[word]
                state = 1
            elif word in TEENS:
                hundreds_part = TEENS[word]
                state = 2
            elif word in TENS:
                hundreds_part = TENS[word]
                state = 3
        elif state == 1:
            if word == HUNDRED:
                hundreds_part *= 100
                state = 4
            elif word in DECIMALS:
                hundreds_part *= DECIMALS[word]
                total += hundreds_part
                hundreds_part = 0
                state = 0
        elif state == 2:
            if word in DECIMALS:
                hundreds_part *= DECIMALS[word]
                total += hundreds_part
                hundreds_part = 0
                state = 0
        elif state == 3:
            if word in ONES:
                hundreds_part += ONES[word]
                state = 5
            elif word in DECIMALS:
                hundreds_part *= DECIMALS[word]
                total += hundreds_part
                hundreds_part = 0
                state = 0
        elif state == 4:
            if word in ONES:
                hundreds_part += ONES[word]
                state = 5
            elif word in TEENS:
                hundreds_part += TEENS[word]
                state = 2
            elif word in TENS:
                hundreds_part += TENS[word]
                state = 3
            elif word in DECIMALS:
                hundreds_part *= DECIMALS[word]
                total += hundreds_part
                hundreds_part = 0
                state = 0
        elif state == 5:
            if word in DECIMALS:
                hundreds_part *= DECIMALS[word]
                total += hundreds_part
                hundreds_part = 0
                state = 0

    total += hundreds_part
    
    return total

if __name__ == "__main__":
    # print from the list of inputs any phrases representing a multiple of 3
    inputs = [
        "five",
        "twenty six",
        "nine hundred ninety nine",
        "twelve",
        "eighteen",
        "one hundred one",
        "fifty two",
        "forty one",
        "seventy seven",
        "six",
        "twelve",
        "four",
        "sixteen",
        # extra that I added myself, to show thousands and millions in action
        "one hundred twenty three thousand four hundred fifty six",
        "nine hundred ninety nine million one",
        "nine hundred ninety nine million three"
    ]

    for phrase in inputs:
        words = phrase.split(" ")
        if from_words(words) % 3 == 0:
            print(phrase)