Cannot connect to the postgresql database locally using python and heroku postgres

Title: Connecting to Heroku Postgres Database Locally with Python
Introduction:
Heroku is a popular cloud platform for hosting web applications, and Heroku Postgres is a managed database service that allows you to store and manage your application's data. If you're developing a Python application and need to connect to a Heroku Postgres database locally for testing and development purposes, this tutorial will guide you through the process.
Prerequisites:
Before you begin, make sure you have the following prerequisites in place:
Python: Ensure you have Python installed on your local development environment.
PostgreSQL Client: You need a PostgreSQL client library for Python, such as psycopg2. Install it using pip:
A Heroku App with Postgres: You should have a Heroku app with a provisioned Postgres database. If you don't have one, create it using the Heroku CLI:
Connecting to Heroku Postgres Database Locally:
Now, let's walk through the steps to connect to your Heroku Postgres database using Python from your local development environment.
Step 1: Retrieve Heroku Postgres Credentials
First, obtain the connection details for your Heroku Postgres database:
You'll see the database URL, which contains all the necessary information to connect to your Heroku Postgres database.
Step 2: Connect to Heroku Postgres in Python
Now, let's write Python code to connect to the Heroku Postgres database.
Replace "DATABASE_URL" with the actual environment variable name containing your Heroku Postgres database URL. This code will connect to your Heroku Postgres database and create a cursor for executing SQL queries.
Step 3: Execute SQL Queries
You can now execute SQL queries on your Heroku Postgres database by using the cursor. Here's an example of executing a simple query:
Make sure to replace "your_table_name" with the name of the table you want to query.
Step 4: Close the Connection
Don't forget to close the cursor and the database connection when you're done with your queries:
Conclusion:
In this tutorial, you've learned how to connect to a Heroku Postgres database locally using Python. By following these steps, you can develop and test your