python mysqlテーブルデータをcsvファイルとしてエクスポート

# coding:utf8
import win32api
import win32con
import xlwt
import pymysql
import os




host = '127.0.0.1'
user = 'root'
pwd = '123456'
db = 'test'
sql = 'select * from master_worker'
sheet_name = '    '
DesktopPath = os.path.join(os.path.expanduser('~'),"Desktop")
out_path = DesktopPath + '\    .csv'
# print(out_path)

def export():
    """    """
    conn = pymysql.connect(host,user,pwd,db,charset='utf8')
    cursor = conn.cursor()
    count = cursor.execute(sql)
    print(count)

    cursor.scroll(0,mode='absolute')
    results = cursor.fetchall()
    fields = cursor.description
    workbook = xlwt.Workbook()
    sheet = workbook.add_sheet(sheet_name,cell_overwrite_ok=True)

    for field in range(0,len(fields)):
        sheet.write(0,field,fields[field][0])

    # row = 1
    # col = 0
    for row in range(1,len(results)+1):
        # print(results[row - 1][1])
        for col in range(0,len(fields)):
            print(results[row - 1][col])
            sheet.write(row,col,u'%s'%results[row-1][col])
            # sheet.write(row,col,results[row-1][col])

    workbook.save(out_path)


try:
    export()
    win32api.MessageBox(0, "       ", "  ", win32con.MB_OK)
except Exception as e:
    print(e)
    win32api.MessageBox(0, "       
%s"%e, "  ", win32con.MB_OK)