Calculates the total value of a pile of poker chips, because counting can be hard sometimes. Requires a json file with the chip values (colour -> number map).

poker_total.py

# ----- Imports ----- #

import json


# ----- Setup ----- #

# This file must be json, a map of colour strings to number values.
CHIP_VALUES_FILE = 'chip-values.json'


# ----- Functions ----- #

def read_values(filename):

    """Reads in the chip values from file and returns as dict."""

    with open(filename, 'r') as values_file:
        chip_values = json.load(values_file)

    return chip_values


def get_amount(colour, value):

    """Retrieves the amount of a colour, handles bad input."""

    amount = raw_input('How many {}s? '.format(colour))

    try:
        return float(amount) * value

    except ValueError:

        print("Well that wasn't a number...")
        return get_amount(colour, value)


def get_total(chip_values):

    """Gets the amount of each colour from the user and calcs the total."""

    total = 0.0

    for colour, value in chip_values.items():
        total += get_amount(colour, value)

    return total


# ----- Run ----- #

chip_values = read_values(CHIP_VALUES_FILE)
total = get_total(chip_values)

print('Your total is: {}'.format(total))

An example chip-values.json might be:

{
    "red": 10,
    "green": 20,
    "blue": 50
}