Finds excel-style column name for a zero-based index. e.g. 3 >> D, 26 >> AA, 28 >> AC etc.

excel_col_finder.py

def indexExcelColumnFinder(self, idx):
        ''' Find Excel-style Column Name
        Given a 0-based index 'idx', returns the
        corresponding Excel-style column naming
        (eg. 3 >> D, 26 >> AA, 27 >> AB etc.)
        '''
        excelColumnNameList = []
        alphabet = map(chr, range(65, 91))

        if idx < 26:
            excelColumnPlace = alphabet[idx]
            return excelColumnPlace
        else:
            letterCounter = 26
            for letter in alphabet:
                for letter2 in alphabet:
                    if letterCounter == idx:
                        excelColumnPlace = letter + letter2
                        return excelColumnPlace
                    letterCounter += 1