WordListOneLook.py

import sys

def patternmatch(pat, word):
    pat = pat.upper()
    word = word.upper()

    # check for pattern length
    if '*' not in pat and len(pat) != len(word):
        return False

    # check for double *'s
    l = 0
    while l < len(pat):
        if l > 0:
            if pat[l] == '*' and pat[l - 1] == '*':
                pat = pat[0:l] + pat[l + 1::]
                l -= 1
        l += 1

    return submatch(pat, word)


def firstalphaindex(word):
    for i in range(len(word)):
        if word[i].isalpha():
            return i
    return -1


def indices(word, char):
    inds = []
    for i in range(len(word)):
        if word[i] == char:
            inds.append(i)
    return inds


def submatch(pat, word):
    if pat == '*':
        return True
    if len(pat) == 0:
        return len(word) == 0
    if len(word) == 0:
        return False
    if pat == word:
        return True

    # process *'s
    if pat[0] == '*':
        ind = firstalphaindex(pat)
        if ind == -1:
            return True
        else:
            if pat[ind] in word[ind - 1::]:
                inds = indices(word, pat[ind])
                return True in [submatch(pat[ind::], word[i::]) for i in inds]
            else:
                return False
    # process wildcards
    if pat[0].isalpha() and pat[0] != word[0]:
        return False
    return submatch(pat[1::], word[1::])


def onelook(args):
    if len(args) != 3:
        return 'Error: input wordlist filepath, followed by a space and then your search query.'

    wordlist = args[1]
    pattern = args[2]

    words = []

    try:
        words = open(wordlist).read().splitlines()
        words = [w[(w.index(' ') + 1)::] if ' ' in w else w for w in words]
    except IOError:
        return 'Error: file not found'

    results = []

    for w in words:
        if patternmatch(pattern, w):
            results.append(w)

    if len(results) == 0:
        return 'I have no words...'
    else:
        return 'I found {} results:\n'.format(len(results)) + '\n'.join(results)


print(onelook(sys.argv))