code: def remove_extra_packages(self, packages, dry_run=False):
          
  
          removal_list = self.determine_extra_packages(packages)
          if not removal_list:
              print("No packages to be removed")
          else:
              if dry_run:
                  print("The following packages would be removed:\n    %s\n" %
                        "\n    ".join(removal_list))
              else:
                  print("Removing packages\n")
                  args = [
                      "pip",
                      "uninstall",
                      "-y",
                  ]
                  args.extend(list(removal_list))
                  subprocess.check_call(args)
docs: Remove all packages missing from list