嗨，我试图使用Python从我的Oracle数据库存储Blob数据，并试图将其存储在本地文件夹中。zip格式。所以我现在有两个代码，其中一个运行良好，但只获取一行并将其存储为文件夹中的。zip，但另一个我试图获取多行，不工作，可能我正在做一些基本的错误，但无法弄清楚，所以请帮助我。下面是代码：-
代码1-运行良好，只获取一行并将其存储为.zip文件夹中：-

import cx_Oracle
import numpy as np
import pandas as pd
con = cx_Oracle.connect("OPTDB90", "OPTDB90", "INDLIN2338:1521/OPTEPC1")
cursor = con.cursor()
sql_string = """SELECT F_name, F_released_data FROM epc_project where rownum<5"""
cursor.execute(sql_string)
#Path="C:\Users\adityasi\Desktop\MY Important\QueryGeneratorPytthonFinal\Project\EPCPROJECTS"
row = cursor.fetchone()
blobdata = np.array(row[1].read())
cursor.close()
filename = str(row[0]) + ".zip"
f = open(filename, 'w+b')
binary_format = bytearray(blobdata)
f.write(binary_format)
f.close()

代码2-抛出错误，无法获取多行并将其存储为.zip文件夹中：-

import cx_Oracle
import numpy as np
import pandas as pd
con = cx_Oracle.connect("OPT", "OPT", "INDLIN2338:1521/OPT1")
cursor = con.cursor()
sql_string = """SELECT F_name, F_released_data FROM epc_project where rownum<5"""
cursor.execute(sql_string)
rows = cursor.fetchall()
for row in rows:
        blobdata= np.array(row[1].read())
        cursor.close()
        filename =str(row[0]) + ".zip"
con.close()
f = open(filename, "wb")
binary_format = bytearray(blobdata)
f.write(binary_format)
f.close()

错误：-

blobdata= np.array(row[1].read())
AttributeError: 'str' object has no attribute 'read'

Process finished with exit code 1

请帮帮我谢谢，阿迪亚