Python script to create a unique string corresponding to a given input number.

create_unique_string.py

import string

# number_letter_map = {0: 'A', 1: 'B', ... , 51: 'z'}
number_letter_map = dict(zip(range(52), string.letters))


def get_unique_string(number):
    """
    Take a number as input and return a unique string corresponding to that number.
    """
    letter_list = []
    while(number > 0):
        remainder = number % 52
        letter = number_letter_map[remainder]
        letter_list.append(letter)
        number = number / 52
        
    return ''.join(reversed(letter_list))
    

if __name__ == '__main__':
    numbers = range(500000, 600000)
    for n in numbers:
        print n, '\t', get_unique_string(n)