old_contents: from django.core.management.base import BaseCommand, CommandError
  
  import cryptography.fernet
  
  
  class Command(BaseCommand):
      help = 'Generates a new Fernet encryption key'
  
      def handle(self, *args, **options):
          key = cryptography.fernet.Fernet.generate_key()
          self.stdout.write(key)
  
new_contents: from django.core.management.base import BaseCommand
  
  import cryptography.fernet
  
  
  class Command(BaseCommand):
      help = 'Generates a new Fernet encryption key'
  
      def handle(self, *args, **options):
          key = cryptography.fernet.Fernet.generate_key()
          self.stdout.write(key)
  
subject: Remove unused import (PEP8)