Real world Common Lisp

A simple Stardict client¹ in python², 21 lines with comments. How easy would it be to write an equivalent program in Common Lisp? I think Lisp is not suitable for practical problems.

import re, gzip, struct

idx_file = open('/usr/share/stardict/dic/quick_english-italian.idx', 'r').read()
dic = gzip.open('/usr/share/stardict/dic/quick_english-italian.dict.dz', 'r')

idx_re = r"([\w\W]+?)\x00([\w\W]{8})"

index = {word:struct.unpack('>ii', bytes)
          for (word, bytes) in re.findall(idx_re, idx_file)}

def lookup_word(word):
    if word not in index:
        return False
    pos, size = index[word]
    dic.seek(pos)
    result = dic.read(size)
    return result

while True:
    result = lookup_word(raw_input("Enter a word: "))
    print(result or "Word not found")

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1 - https://github.com/xiangfu/stardict/blob/master/doc/StarDictFileFormat
2 - Requires python 2.7

>>70

from random import choice

def Dict(**args): return args

grammar = Dict(
        S = [['NP','VP']],
        NP = [['Art', 'N']],
        VP = [['V', 'NP']],
        Art = ['the', 'a'],
        N = ['man', 'ball', 'woman', 'table'],
        V = ['hit', 'took', 'saw', 'liked']
        )

def generate(phrase):
    "Generate a random sentence or phrase"
    if isinstance(phrase, list):
        return mappend(generate, phrase)
    elif phrase in grammar:
        return generate(choice(grammar[phrase]))
    else: return [phrase]



>>> generate('S')
['the', 'man', 'saw', 'the', 'table']

>>> ' '.join(generate('S'))
'the man saw the table'