Wordsearch

app.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import sys

if len(sys.argv) == 3:
    wordlength = int(sys.argv[1])
    wordchars = sys.argv[2]
else:
    wordlength = int(input('Word length?\n'))
    wordchars = input('Chars?\n')

with open('german.utf8.dic') as f:
    last = None
    for word in f.readlines():
        word = word.strip().lower()
        if word == last:
            continue
        last = word
        if len(word) == wordlength:
            valid = True
            chars = wordchars
            for c in word:
                if c not in chars:
                    valid = False
                    break
                chars = chars.replace(c, '_', 1)
            if valid:
                print(word)