教你用Python编写一个拼写检查器，python编写拼写检查,没事的时候，我用Pyth

教你用Python编写一个拼写检查器，python编写拼写检查,没事的时候，我用Pyth

没事的时候，我用Python编写了一个拼写检查器，今天分享给大家。

1.[图片]python Screenshot-1.png

2.[文件]python spell.py~1KB

#!/usr/bin/pythonimport re, collectionsdef words(text):return re.findall('[a-z]+', text.lower())def train(features):model = collections.defaultdict(lambda: 1)for f in features:model[f] += 1return modelNWORDS = train(words(file('big.txt').read()))alphabet = 'abcdefghijklmnopqrstxyz'def edist1(word):n = len(word)return set([word[0:i]+word[i+1: ] for i in range(n)] +#deletion   [word[0:i]+word[i+1]+word[i]+word[i+2: ] for i in range(n-1)] +#transposition   [word[0:i]+c+word[i+1: ] for i in range(n) for c in alphabet] +#alteration   [word[0:i]+c+word[i: ] for i in range(n+1) for c in alphabet])#insertiondef known_edist2(word):return set(e2 for e1 in edist1(word) for e2 in edist1(e1) if e2 in NWORDS)# python www.iplaypy.com 教程def known(words):return set(w for w in words if w in NWORDS)def correct(word):candidates = known([word]) or known(edist1(word)) or known_edist2(word) or [word]return max(candidates, key=lambda w:NWORDS[w])print('thew => ' + correct('thew'))print('spak => ' + correct('spak'))print('goof => ' + correct('goof'))print('babyu => ' + correct('babyu'))print('spalling => ' + correct('spalling'))

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