import xlwt
from datetime import datetime
style0 = xlwt.easyxf('font: name Times New Roman, color-index red, bold on',
num_format_str='#,##0.00')
style1 = xlwt.easyxf(num_format_str='D-MMM-YY')
wb = xlwt.Workbook()
ws = wb.add_sheet('A Test Sheet')
ws.write(0, 0, 1234.56, style0)
ws.write(1, 0, datetime.now(), style1)
ws.write(2, 0, 1)
ws.write(2, 1, 1)
ws.write(2, 2, xlwt.Formula("A3+B3"))
wb.save('example.xls')