Convert the letters of your full name into numbers, add them together, & determine the prime factorization of the sum

todayschallenge.py

#!/usr/bin/env python
# encoding: utf-8
"""
Today's challenge:
Convert the letters of your full name into numbers, add them together,
& determine the prime factorization of the sum

https://twitter.com/todayschallenge/status/638713672278351875
https://twitter.com/todayschallenge/status/639075809060356096
"""
from __future__ import print_function, unicode_literals
import argparse


# How many points does each letter have (in the font in this text editor)?
NONE = "BDO"
ONE = "Q"
TWO = "ACGJLMNPRSUVWZ"
THREE = "EFTY"
FOUR = "HIKX"


def letters_into_numbers(words):
    sum = 0
    for c in words.upper():
        if c in NONE:
            sum += 0
        elif c in ONE:
            sum += 1
        elif c in TWO:
            sum += 2
        elif c in THREE:
            sum += 3
        elif c in FOUR:
            sum += 4
    print("Sum = ", sum)
    return sum


def prime_factorisation(number):
    # http://www.calculatorsoup.com/calculators/math/prime-factors.php

    saved = []
    divider = 2

    while(True):
        result = number / float(divider)
        print(number, "/", divider, "=", result, " integer:",
              result.is_integer())
        if result.is_integer():
            saved.append(divider)
            print("Save:", divider)
            number = result
        else:
            divider += 1
        if result == 1:
            break

    print("Prime factorisation:", saved)
    return saved


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description="Today's challenge: Convert the letters of your full name "
        "into numbers, add them together, & determine the prime factorization "
        "of the sum",
        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
    parser.add_argument('name', help="A name")

    args = parser.parse_args()

    sum = letters_into_numbers(args.name)

    result = prime_factorisation(sum)

# End of file

$ python todayschallenge.py "hugovk"
Sum =  14
14 / 2 = 7.0  integer: True
Save: 2
7.0 / 2 = 3.5  integer: False
7.0 / 3 = 2.33333333333  integer: False
7.0 / 4 = 1.75  integer: False
7.0 / 5 = 1.4  integer: False
7.0 / 6 = 1.16666666667  integer: False
7.0 / 7 = 1.0  integer: True
Save: 7
Prime factorisation: [2, 7]

$ python todayschallenge.py "Today's Challenge"
Sum =  32
32 / 2 = 16.0  integer: True
Save: 2
16.0 / 2 = 8.0  integer: True
Save: 2
8.0 / 2 = 4.0  integer: True
Save: 2
4.0 / 2 = 2.0  integer: True
Save: 2
2.0 / 2 = 1.0  integer: True
Save: 2
Prime factorisation: [2, 2, 2, 2, 2]