How to use Spell checking in Python

What is spell checking? 

In computing, a spell checker (or spell check) is an application program that flags words in a document that may not be spelled correctly. Spell checkers may be stand-alone, capable of operating on a block of text, or as part of a larger application, such as a word processor, email client, electronic dictionary, or search engine.

1. using the popen2 module in python to call the commandlines

http://code.activestate.com/recipes/117221/

http://blog.quibb.org/2009/04/spell-checking-in-python/

Spell4Py is a Wrapper for Hunspell library. Org.keyphrene has been 

splited to several simple projects.

There is a tutorial for Hunspell here: 

http://blog.keyphrene.com/keyphrene/index.php/Tutorialorgkeyphrene

2. using a pure python program.

http://norvig.com/spell-correct.html

This page provides a very simple pure python spell checking program.

You can train it with a dictionary or a textual corpus off-the-shelf with

an accuracy around 70%. 

I also deploy an application online, click here as an example.  You can also try other words for testing. 

3. Google API

http://developer.51cto.com/art/201103/252396.htm

http://stackoverflow.com/questions/8428767/

how-to-implement-python-spell-checker-using-googles-did-you-mean

import httplibimport xml.dom.minidom

data = """
0" ignoredups="0" ignoredigits="1" ignoreallcaps="1">
 %s 

"""
def spellCheck(word_to_spell):

    con = httplib.HTTPSConnection("www.google.com")
    con.request("POST", "/tbproxy/spell?lang=en", data % word_to_spell)
    response = con.getresponse()

    dom = xml.dom.minidom.parseString(response.read())
    dom_data = dom.getElementsByTagName('spellresult')[0]

    if dom_data.childNodes:
        for child_node in dom_data.childNodes:
            result = child_node.firstChild.data.split()
        for word in result:
            if word_to_spell.upper() == word.upper():
                return True;
        return False;
    else:
        return True;