import pymssql
from xlwt import Workbook
conn = pymssql.connect(charset='utf8',host='127.0.0.1:13000',user='username',password='password',database='databasename')
cur = conn.cursor()
sqlstr ='select A ,B from tablename'
cur.execute(sqlstr)
rows=cur.fetchall()
w=Workbook(encoding='utf-8')
ws=w.add_sheet('Sheet1')
for i,row in enumerate(rows):
for j,cell in enumerate(row):
ws.write(i,j,cell)
w.save('xlsname.xls')