old_contents: import os
  from random import choice
  
  home_dir = os.path.abspath(os.path.dirname(__file__))
  
  
  class Config(object):
      SECRET_KEY_CHAR_SET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
      SECRET_KEY_LENGTH = 60
      DEBUG = False
      TESTING = False
      CSRF_ENABLED = True
      SQLALCHEMY_DATABASE_URI = os.environ['DATABASE_URI']
      SECRET_KEY = ''.join([choice(SECRET_KEY_CHAR_SET) for x in range(SECRET_KEY_LENGTH)])  # randomly generated
  
  
  class ProductionConfig(Config):
      DEBUG = False
  
  
  class DevelopmentConfig(Config):
      DEBUG = False
  
  class LocalConfig(Config):
      DEBUG = True
  
  
  class TestingConfig(Config):
      TESTING = True
  
new_contents: import os
  from random import choice
  
  home_dir = os.path.abspath(os.path.dirname(__file__))
  
  
  class Config(object):
      SECRET_KEY_CHAR_SET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
      SECRET_KEY_LENGTH = 60
      DEBUG = False
      TESTING = False
      CSRF_ENABLED = True
      SQLALCHEMY_DATABASE_URI = os.environ['DATABASE_URL']
      SECRET_KEY = ''.join([choice(SECRET_KEY_CHAR_SET) for x in range(SECRET_KEY_LENGTH)])  # randomly generated
  
  
  class ProductionConfig(Config):
      DEBUG = False
  
  
  class DevelopmentConfig(Config):
      DEBUG = False
  
  class LocalConfig(Config):
      DEBUG = True
  
  
  class TestingConfig(Config):
      TESTING = True
  
subject: Fix typo