t.py

#!/usr/bin/python
#-*-coding:utf-8-*-

# Code stolen and modified from Emre Sevinç:
# 	http://github.com/emres/turkish-deasciifier

def set_char_at(string, pos, c):
    return string[0:pos] + c + string[pos+1:]

def turkish_accent(c):
    return {
         u'ç': u'c',
         u'Ç': u'C',
         u'ğ': u'g',
         u'Ğ': u'G',
         u'ö': u'o',
         u'Ö': u'O',
         u'ü': u'u',
         u'Ü': u'U',
         u'ı': u'i',
         u'İ': u'I',
         u'ş': u's',
         u'Ş': u'S',
    }.get(c, c)

def turkish_asciify(string):
    u"""Return an ascii string from a unicode Turkish string.
    >>> turkish_asciify(u'abcığüşöçiIİĞÜŞÖÇ')
    'abcigusociIIGUSOC'
    """
    for i in range(len(string)):
        string = set_char_at(string, i, turkish_accent(string[i]))
    return str(string)

if __name__ == "__main__":
    import doctest
    doctest.testmod()