old_contents: import os
  
  class Config:
      """General configurations"""
  
      # testing parameters
      DEBUG = False
      TESTING = False
  
      # passed to app.run as kwargs
      INIT = {
          'host': '127.0.0.1',
          'port': 8002
      }
  
  
  class ProductionConfig(Config):
      """Configuration for production"""
  
      # URL for users to access
      URL = '/hub/interact/'
  
      # JupyterHub API token
      API_TOKEN = os.environ['JPY_API_TOKEN']
  
      # Cookie name?
      COOKIE = 'jupyter-hub-token'
  
      # where file is copied to
      COPY_PATH = '/home/{username}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/user/{username}/notebooks/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://data8.org'
  
      # base_url for the program
      BASE_URL = 'https://ds8.berkeley.edu'
  
      # alowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
      # app.run parameters
      INIT = {
          'host': '0.0.0.0',
          'port': 8002
      }
  
  
  class DevelopmentConfig(Config):
      """Configuration for development mode"""
  
      # testing parameters
      DEBUG = True
  
      # URL for users to access
      URL = '/'
  
      # JupyterHub API token
      API_TOKEN = 'your_token_here'
  
      # Cookie name?
      COOKIE = 'interact'
  
      # where file is copied to
      COPY_PATH = 'app/static/users/{username}/{destination}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/static/users/{username}/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://localhost:8000'
  
      # base_url for the program
      BASE_URL = 'http://localhost:8002'
  
      # allowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
  
  class TestConfig(Config):
      """Configuration for testing mode"""
  
      # testing parameters
      TESTING = True
  
      # URL for users to access
      URL = '/'
  
      # JupyterHub API token
      API_TOKEN = 'your_token_here'
  
      # Cookie name?
      COOKIE = 'interact'
  
      # where file is copied to
      COPY_PATH = 'app/static/users/{username}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/static/users/{username}/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://localhost:8000'
  
      # base_url for the program
      BASE_URL = 'http://localhost:8002'
  
      # allowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
new_contents: import os
  
  class Config:
      """General configurations"""
  
      # testing parameters
      DEBUG = False
      TESTING = False
  
      # passed to app.run as kwargs
      INIT = {
          'host': '127.0.0.1',
          'port': 8002
      }
  
  
  class ProductionConfig(Config):
      """Configuration for production"""
  
      # URL for users to access
      URL = '/hub/interact/'
  
      # JupyterHub API token
      API_TOKEN = os.environ['JPY_API_TOKEN']
  
      # Cookie name?
      COOKIE = 'jupyter-hub-token'
  
      # where file is copied to
      COPY_PATH = '/home/{username}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/user/{username}/notebooks/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://data8.org'
  
      # base_url for the program
      BASE_URL = 'https://ds8.berkeley.edu'
  
      # alowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
      # app.run parameters
      INIT = {
          'host': '0.0.0.0',
          'port': 8002
      }
  
  
  class DevelopmentConfig(Config):
      """Configuration for development mode"""
  
      # testing parameters
      DEBUG = True
  
      # URL for users to access
      URL = '/'
  
      # JupyterHub API token
      API_TOKEN = 'your_token_here'
  
      # Cookie name?
      COOKIE = 'interact'
  
      # where file is copied to
      COPY_PATH = 'app/static/users/{username}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/static/users/{username}/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://localhost:8000'
  
      # base_url for the program
      BASE_URL = 'http://localhost:8002'
  
      # allowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
  
  class TestConfig(Config):
      """Configuration for testing mode"""
  
      # testing parameters
      TESTING = True
  
      # URL for users to access
      URL = '/'
  
      # JupyterHub API token
      API_TOKEN = 'your_token_here'
  
      # Cookie name?
      COOKIE = 'interact'
  
      # where file is copied to
      COPY_PATH = 'app/static/users/{username}'
  
      # where users are redirected upon success
      REDIRECT_PATH = '/static/users/{username}/{destination}'
  
      # allowed sources for file parameter in query
      ALLOWED_DOMAIN = 'http://localhost:8000'
  
      # base_url for the program
      BASE_URL = 'http://localhost:8002'
  
      # allowed file extensions
      ALLOWED_FILETYPES = ['ipynb']
  
subject: Fix COPY_PATH for dev config