python 执行sql得到字典格式数据

本文在提供一种方式,实现执行sql语句  返回字典结果集 

　　　　 # 连接数据库，数据库的，这里使用的setting中的默认设置，在这里不做具体的介绍，不懂的可以百度一下
        conn = MySQLdb.connect(host=settings.DATABASES['default']['HOST'], user=settings.DATABASES['default']['USER'],
                               passwd=settings.DATABASES['default']['PASSWORD'],
                               db=settings.DATABASES['default']['NAME'])
        cursor = conn.cursor()

        # 原生sql语句，注意要用六个  "
        sql = """ SELECT total_premium,quote_count,order_count from usr_statistics WHERE DAY = 20170422"""
        # 执行sql

        cursor.execute(sql)

        # 只用于select语句，返回一行的列名
        desc = cursor.description
        print ""
        print desc
        # desc 将会输出  (('total_premium', 246, 7, 26, 26, 2, 0), ('quote_count', 3, 3, 11, 11, 0, 0), ('order_count', 3, 3, 11, 11, 0, 0))

        object_dict = [
            dict(zip([col[0] for col in desc],row))
            for row in cursor.fetchall()
        ]

        cursor.close()

        print ""
        print object_dict
        # 下面是object_dict的输出，太长了，已经给其换行

        # [{'quote_count': 5L, 'total_premium': Decimal('200.00'), 'order_count': 7L},
        # {'quote_count': 5L, 'total_premium': Decimal('200.00'), 'order_count': 7L},
        # {'quote_count': 45L, 'total_premium': Decimal('999.00'), 'order_count': 78L},
        # {'quote_count': 65L, 'total_premium': Decimal('999.00'), 'order_count': 78L},
        # {'quote_count': 45L, 'total_premium': Decimal('888.00'), 'order_count': 78L},
        # {'quote_count': 123L, 'total_premium': Decimal('523.00'), 'order_count': 23L},
        #  {'quote_count': 2L, 'total_premium': Decimal('211.00'), 'order_count': 21L},
        # {'quote_count': 1L, 'total_premium': Decimal('0.00'), 'order_count': 23L},
        # {'quote_count': 23L, 'total_premium': Decimal('213.00'), 'order_count': 23L},
        # {'quote_count': 13L, 'total_premium': Decimal('1232.00'), 'order_count': 123L},
        # {'quote_count': 0L, 'total_premium': Decimal('0.00'), 'order_count': 1L},
        # {'quote_count': 0L, 'total_premium': Decimal('0.00'), 'order_count': 0L},
        # {'quote_count': 0L, 'total_premium': Decimal('0.00'), 'order_count': 0L},
        # {'quote_count': 0L, 'total_premium': Decimal('0.00'), 'order_count': 0L},
        # {'quote_count': 0L, 'total_premium': Decimal('0.00'), 'order_count': 0L}]

        object_list = []
        object_list_b = []

        for i in object_dict:
            object_list.append(int(i.get("total_premium")))
            object_list_b.append(i.get("quote_count"))

        print ""
        print object_list
        print object_list_b

        # object_list输出    [200, 200, 999, 999, 888, 523, 211, 0, 213, 1232, 0, 0, 0, 0, 0]
        # object_list_b输出  [5L, 5L, 45L, 65L, 45L, 123L, 2L, 1L, 23L, 13L, 0L, 0L, 0L, 0L, 0L]

        conn.close()

本文链接：http://www.cnblogs.com/xuchunlin/p/6676300.html