text: import os
  
  class Config:
      DEBUG = True
      SECRET_KEY = 'mysterious_key'
      SQLALCHEMY_DATABASE_URI = 'postgresql+psycopg2://oscar:123456789@localhost/pitchapp'
      SQLALCHEMY_TRACK_MODIFICATIONS = False
      
      MAIL_SERVER = 'smtp.googlemail.com'
      MAIL_PORT = 587
      MAIL_USE_TLS = True
      MAIL_USERNAME = 'test.user.python3.6@gmail.com'
      MAIL_PASSWORD = 'codingstudent001'
      
      
  class ProdConfig(Config):
      SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL")
      
  class TestConfig(Config):
      SQLALCHEMY_DATABASE_URI = 'postgresql+psycopg2://oscar:123456789@localhost/pitchapp'
      
  class DevConfig(Config):
      SQLALCHEMY_DATABASE_URI = 'postgresql+psycopg2://oscar:123456789@localhost/pitchapp'
      
      DEBUG = True
      ENV = 'development'
      
  config_options = {
      'development':DevConfig,
      'production':ProdConfig,
      'test':TestConfig
  }