Alright, let's get started with setting up your Supabase environment. It's pretty straightforward:

• Head over to Supabase.io and sign up if you haven't already.
• Click on "New Project" and fill in the details. Supabase will handle setting up a new Postgres database for you.
• Once your project is ready, you'll be taken to the project dashboard. Here, you'll find the API URL and the anon key. Keep these handy!

Now, let's dive into extracting some data. Follow these steps:

• Step 1: First, import the Supabase client into your file.

  from supabase_py import create_client, Client
  supabase: Client = create_client("Your_SUPABASE_URL", "Your_SUPABASE_KEY")
  

• Step 2: Next, use the from function to specify the table and then the select function to get the data.

  result = supabase.table('your_table').select('*')
  

• Step 3: Finally, view the extracted data by calling the data attribute on the result.

  data = result['data']
  print(data)
  

Transforming data with Supabase is a breeze. You can use SQL queries for this. Here's a simple example to rename a column:

• Step 1: Write a SQL query to rename the column.

  query = "ALTER TABLE your_table_name RENAME COLUMN old_column_name TO new_column_name;"
  

• Step 2: Execute the query using the sql method.

  result = supabase.sql.query(query)
  

Loading data into Supabase is just as easy. You can use the insert function for this:

• Step 1: Create the data you want to insert into the table.

  data_to_insert = {"column1": "value1", "column2": "value2"}
  

• Step 2: Use the insert function to load the data into the table.

  result = supabase.table('your_table').insert(data_to_insert)
  

• Step 3: Check if the data has been added successfully.

  print(result['data'])
  

And there you have it! You're all set to perform ETL operations with Supabase. Happy coding!