*After deploying my django model in heroku and migrations,  

I am unable to load data into the postgres table by batch run
*

Ex:

heroku run python ProddbUpload.py  

I am disappointed with below error

Running python ProddbUpload.py

on ⬢ spellbeeword... up, run.9508 (Free)
relation "spellbeeword_tb" does not exist 

Verified table name Spellbeeword_tb exist in my Postgres database in heroku environment using pg:psql My code to upload data into above mentioned table

import os
import psycopg2
def writedb(conn):
    cur = conn.cursor()
    try:
        with  open("spellbee/docs/Spell_Bee_Word_db.csv", 'r') as f:
            cur.copy_from(f,'Spellbeeword_tb',sep=',')
            # commit changes
            conn.commit()
    
    except Exception as error:
        print(error)
    finally:
        if conn:
            conn.close()
            f.close()
def main():
    DATABASE_URL = os.environ['DATABASE_URL']
    try:
        conn = psycopg2.connect(DATABASE_URL, sslmode='require')
        writedb(conn)
    except(Exception, psycopg2.DatabaseError) as error:
        print(error)
    finally:
        if conn:
            conn.close()
if __name__ == "__main__" :
    main()

In pg:psql query, it shows database connection for my table as --> Connecting to postgresql-flat-40316
But in heroku environment variables , it is showing as
=== spellbeeword Config Vars

DATABASE_URL: postgres://mlsudzmqspljyc:[email protected]: By default the above config made.

I dont know how to connect postgresql-flat-40316/Spellbeeword_tb

when I checked with the below code, nothing printed

cur.execute('SELECT version()')

display the PostgreSQL database server version

db_version = cur.fetchone() print(db_version)

 Pls help me to import my data into table created by django model in heroku.  

I think , in heroku run it is not identifying the correct database to connect .
I followed heroku postgresl django deployment documentation where
DATABASE_URL were configured by dj-database-url installation
https://devcenter.heroku.com/articles/heroku-postgresql#connecting-in-python
I ran the above dbupload code via heroku run python <dbupload-filename.py>
requirements and settings.py were pushed to heroku before this run seperately # setting DATABASE url DATABASES = {'default' : dj_database_url.config() }

=== DATABASE_URL
Plan:                  Hobby-dev
Status:                Available
Connections:           0/20
PG Version:            13.2
Created:               2021-04-06 10:54 UTC
Data Size:             9.0 MB
Tables:                13
Rows:                  68/10000 (In compliance)
Fork/Follow:           Unsupported
Rollback:              Unsupported
Continuous Protection: Off
Add-on:                postgresql-flat-40316

table row: ('d7uobuibp87kvk', 'public', 'Spellbeeword_tb', 'BASE TABLE', None, None, None, None, None, 'YES', 'NO', None) inside database ,my target table exist but it shows

relation "spellbeeword_tb" does not exist
LINE 1: SELECT * FROM Spellbeeword_tb;
                      ^

Can anyone suggest how to speccify table name in the code to recognize