old_contents: import os
  
  from flask import Flask
  
  
  app = Flask('pythoncz')
  app.config.from_object('pythoncz.config')
  
  if not app.debug:
      app.config['SERVER_NAME'] = os.getenv('SERVER_NAME', 'python.cz')
  
  from pythoncz import views  # NOQA
  
new_contents: import os
  
  from flask import Flask
  
  
  app = Flask('pythoncz')
  app.config.from_object('pythoncz.config')
  
  if not app.debug:
      app.config['SERVER_NAME'] = os.getenv('SERVER_NAME', 'python.cz')
  
  
  from pythoncz import views  # NOQA
  
subject: Add whitespace