in odoo 11

i applied a script for importing products list to my database all is fine until now, but when i check articles menu  in stock module or purchase i don't find any imported products even are in my database (i checked my db (product_template and product_product) all products exist)

script:

import csv
import psycopg2

conn_string = "dbname= 'db' user='vagrant' password='vagrant'"

conn = psycopg2.connect(conn_string)
cursor = conn.cursor()

reader = csv.reader(open('listArticles.csv', 'r'))

for row in reader:
   print(row)
   statement = "INSERT INTO product_template (name,default_code,list_price,type,categ_id,sale_ok,uom_id,uom_po_id,responsible_id,tracking,sale_line_warn) " \
               "VALUES ('" +row[1]+"','" +(row[0])+"','" +(row[3])+"','" +(row[2])+"',1,True,1,1,1,'serial','no-message') RETURNING id"

   cursor.execute(statement)
   conn.commit()
   templateid = cursor.fetchone()[0]

   statement = "INSERT INTO product_product (product_tmpl_id,default_code,active) VALUES \
    (" + str(templateid) + ",'" + row[0] + "',True)"

   cursor.execute(statement)
   conn.commit()