[Python] I get "connection to server at "127.0.0.1", port 5432 failed: FATAL: database...

I created a database called "colors" in my postgress server but I couldn't access it using python with the psycopg2 driver. See screenshot of my code & error, and the existing database in my postgress below.

python code & error](https://i.sstatic.net/bbdHFJUr.png) existing database in my postgress server](https://i.sstatic.net/CUhy38Rr.png)

I wrote a code to connect to an existing database but I got an error that the database doesn't exist even though it does.

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