python 拼写检查器

简短到爆的py脚本

import re
from collections import Counter
def words(text):
    return re.findall(r'\w+',text.lower())
Words = Counter(words(open('big.txt').read()))
def P(word,N=sum(Words.values())):
    return Words[word] / N
def correction(word):
    return max(candidates(word), key=P)
def candidates(word):
    return (known([word]) or known(editsl(word)) or known(editsl2(word)) or [word])
def known(words):
    return set(w for w in words if w in Words)
def editsl(word):
    letters = 'abcdefghijklmnopqrstuvwxyz'
    splits = [(word[:i],word[i:])        for i in range(len(word)+1)]
    deletes    = [L + R[1:]              for L, R in splits if R]
    transposes = [L + R[1] + R[0] + R[2:] for L, R in splits if len(R)>1]
    replaces  = [L + c + R[1:]          for L, R in splits if R for c in letters]
    inserts    = [L + c + R              for L, R in splits for c in letters]
    return set(deletes + transposes + replaces + inserts)
def editsl2(word):
    return (e2 for e1 in edits1(word) for e2 in edits1(e1))
if __name__ == '__main__':
    val = input('please inserts a word :')
    string = correction(val)
    print(string)

big.txt 资源地址

原文：spell-correct