python3实现mysql导出excel

Mysql中'employee'表内容如下：

 # __Desc__ = 从数据库中导出数据到excel数据表中
 import xlwt
 import pymysql

 class MYSQL:
     def __init__(self):
         pass

     def __del__(self):
         self._cursor.close()
         self._connect.close()

     def connectDB(self):
         """
         连接数据库
         :return:
         """
         try:
             self._connect = pymysql.Connect(
                 host='localhost',
                 port=3306,
                 user='root',
                 passwd='',
                 db='test',
                 charset='utf8'
             )

             return 0
         except:
             return -1

     def export(self, table_name, output_path):
         self._cursor = self._connect.cursor()
         count = self._cursor.execute('select * from '+table_name)
         # print(self._cursor.lastrowid)
         print(count)
         # 重置游标的位置
         self._cursor.scroll(0, mode='absolute')
         # 搜取所有结果
         results = self._cursor.fetchall()

         # 获取MYSQL里面的数据字段名称
         fields = self._cursor.description
         workbook = xlwt.Workbook()

         # 注意: 在add_sheet时, 置参数cell_overwrite_ok=True, 可以覆盖原单元格中数据。
         # cell_overwrite_ok默认为False, 覆盖的话, 会抛出异常.
         sheet = workbook.add_sheet('table_'+table_name, cell_overwrite_ok=True)

         # 写上字段信息
         for field in range(0, len(fields)):
             sheet.write(0, field, fields[field][0])

         # 获取并写入数据段信息
         row = 1
         col = 0
         for row in range(1,len(results)+1):
             for col in range(0, len(fields)):
                 sheet.write(row, col, u'%s' % results[row-1][col])

         workbook.save(output_path)

 if __name__ == '__main__':
     mysql = MYSQL()
     flag = mysql.connectDB()
     if flag == -1:
         print('数据库连接失败')
     else:
         print('数据库连接成功')
         mysql.export('employee', 'E:/test_input.xls')

执行结果如下：