old_contents: import logging
  
  from flask import Flask
  
  log = logging.getLogger(__name__)
  
  app = Flask(__name__)
  
  import mangacork.views
  
new_contents: import os
  import logging
  
  from flask import Flask
  
  log = logging.getLogger(__name__)
  
  app = Flask(__name__)
  app.config.from_object(os.environ['APP_SETTINGS'])
  
  import mangacork.views
  
subject: Add config for different env