Выгрузка из базы данных PostgreSQL

import psycopg2
from datetime import datetime
 
current_datetime = datetime.now().date()
 
con = psycopg2.connect(
     database = 'postgres',
     user     = 'postgres',
     password = '123',
     host = 'localhost',
     port = '5432'
 )
print ("База данных подключена")
cur = con.cursor()
 
 
current_datetime = str(current_datetime)
sql = "COPY (SELECT test FROM public.news_artiles)TO STDOUT WITH CSV DELIMITER ';'"
with open ('/Result/'+current_datetime+'.mrt',"w",encoding='utf-8') as file :
    cur.copy_expert(sql, file)

import psycopg2
import json
from datetime import datetime
con = psycopg2.connect(
     database = 'postgres',
     user     = 'postgres',
     password = '123',
     host = 'localhost',
     port = '5432'
 )
current_datetime = datetime.now().date() 
cur = con.cursor()        
postgreSQL_select_Queryl = "SELECT report_name, report_content FROM public.reports"
cur.execute (postgreSQL_select_Queryl)     
sq = cur.fetchall() 
koll=0
for row in sq:
    print('Отчетная форма=',row[0])
    name = row[0]
    content  = row[1]
    current_datetime = str(current_datetime)           
    sql = content  
    sqr = str(name)  
    with open ('/WORK/Copirate/Result/'+sqr+' '+current_datetime+'.mrt',"w",encoding='utf-8') as file :  
                                file.write(json.dumps(sql))
    koll+=1                            
print('Отчётов сохранено:', koll)