Generate Column Names in Excel Spreadsheet with python and win32com

Excel_Column_Names.py

class Excel:
    def __init__(self):
        self.xlApp = win32com.client.gencache.EnsureDispatch('Excel.Application')
        self.xlApp.Visible = True
        self.wk = self.xlApp.Workbooks.Add()

    def column_name(self, iVal):
        if iVal <= 0:
            return ""
        elif iVal <= 26:
            return chr(64 + iVal)
        elif iVal >= 16384:
            return 'XFD'
        else:
            m = (iVal - 1) // 26
            n = (iVal - 1) % 26 + 1
            return self.column_name(m) + chr(64 + n)