old_contents: import os
  
  # default connection string info here
  driver = 'postgresql'
  username = os.getenv('DB_USERNAME') or 'undefined'
  password = os.getenv('DB_PASSWORD') or 'undefined'
  host = 'localhost'
  port = '5432'
  # empty until set by user
  default_db = 'econ'
  
new_contents: import os
  
  # default connection string info here
  driver = 'postgresql'
  username = os.getenv('DB_USERNAME') or 'undefined'
  password = os.getenv('DB_PASSWORD') or 'undefined'
  host = 'localhost'
  port = '5432'
  # empty until set by user
  default_db = 'lyrics'
  
subject: change default db