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i have a string "Mikael Håfström" which contains some special characters how do i remove this using python?
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This should do what you're looking for: function clean($string) { $string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens. return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars. }
To remove all the characters other than alphabets(a-z) && (A-Z), we just compare the character with the ASCII value, and for the character whose value does not lie in the range of alphabets, we remove those characters using string erase function.
You can use the unicodedata module to normalize unicode strings and encode them in their ASCII form like so:
>>> import unicodedata
>>> source = u'Mikael Håfström'
>>> unicodedata.normalize('NFKD', source).encode('ascii', 'ignore')
'Mikael Hafstrom'
One notable exception is that the letters 'đ' and 'Đ' are not recognized by Python and they do not get encoded to 'd', so they will simply be omitted from the result. That's a voiced alveolo-palatal affricate present in the latin alphabet of some SEE languages, so it may or may not immediately concern you based on your audience or whether or not your providing full support for the Latin-1 character set. I currently have Python 2.6.5 (Mar 19 2010) running locally and the issue is present, though I'm sure it may have been resolved with newer releases.
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For example using the encode method: u"Mikael Håfström".encode("ascii", "ignore")
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