I&#39;m fairly new to Python and NLTK. I am busy with an application that can perform spell checks (replaces an incorrectly spelled word with the correct one).
I&#39;m currently using the Enchant library on Python 2.7, PyEnchant and the NLTK library. The code below is a class that handles the correction/replacement. 

    from nltk.metrics import edit_distance

    class SpellingReplacer:
        def __init__(self, dict_name=&#39;en_GB&#39;, max_dist=2):
            self.spell_dict = enchant.Dict(dict_name)
            self.max_dist = 2

        def replace(self, word):
            if self.spell_dict.check(word):
                return word
            suggestions = self.spell_dict.suggest(word)

            if suggestions and edit_distance(word, suggestions[0]) &lt;= self.max_dist:
                return suggestions[0]
            else:
                return word


I have written a function that takes in a list of words and executes replace() on each word and then returns a list of those words, but spelled correctly.

    def spell_check(word_list):
        checked_list = []
        for item in word_list:
            replacer = SpellingReplacer()
            r = replacer.replace(item)
            checked_list.append(r)
        return checked_list

    &gt;&gt;&gt; word_list = [&#39;car&#39;, &#39;colour&#39;]
    &gt;&gt;&gt; spell_check(words)
    [&#39;car&#39;, &#39;color&#39;]

Now, I don&#39;t really like this because it isn&#39;t very accurate and I&#39;m looking for a way to achieve spelling checks and replacements on words. I also need something that can pick up spelling mistakes like &quot;caaaar&quot;? Are there better ways to perform spelling checks out there? If so, what are they? How does Google do it? Because their spelling suggester is very good.

Any suggestions?

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Spell Checker for Python