code for word puzzle solver in python

solve_puzzel.py

import re
import itertools


def solve(puzzle):
    # find all words in it
    words = re.findall('[A-Z]+', puzzle.upper()) 

    # make a list of unique chars
    unique_characters = set(''.join(words))

    # check if entered chars are more than 10
    assert len(unique_characters) <= 10, 'Too many letters'  

    # make a unique list of first letter of every words
    first_letters = {word[0] for word in words} 

    # len of first letters list
    n = len(first_letters)

    # 
    sorted_characters = ''.join(first_letters) + ''.join(unique_characters - first_letters)
    characters = tuple(ord(c) for c in sorted_characters)
    digits = tuple(ord(c) for c in '0123456789')
    zero = digits[0]
    print( "there is ",len(list(itertools.permutations(digits, len(characters))))," permutations")
    for guess in itertools.permutations(digits, len(characters)):
        if zero not in guess[:n]:
            trns = dict(zip(characters, guess))
            equation = puzzle.translate(trns)
            if eval(equation):
                return equation




if __name__ == '__main__':
    import sys
    for puzzle in sys.argv[1:] :
    # for puzzle in ["SEND + MORE == MONEY"]:
        print(puzzle)
        solution  = solve(puzzle)
        if solution:
            print(solution)
        else:
            print(f'No solution found for {puzzle}')