old_contents: import os.path
  import os
  import shutil
  
  from dbt.task.base import ProjectOnlyTask
  from dbt.logger import GLOBAL_LOGGER as logger
  
  
  class CleanTask(ProjectOnlyTask):
  
      def __is_project_path(self, path):
          proj_path = os.path.abspath('.')
          return not os.path.commonprefix(
              [proj_path, os.path.abspath(path)]
          ) == proj_path
  
      def __is_protected_path(self, path):
          """
          This function identifies protected paths, so as not to clean them.
          """
          abs_path = os.path.abspath(path)
          protected_paths = self.config.source_paths + \
              self.config.test_paths + ['.']
          protected_abs_paths = [os.path.abspath for p in protected_paths]
          return abs_path in set(protected_abs_paths) or \
              self.__is_project_path(abs_path)
  
      def run(self):
          """
          This function takes all the paths in the target file
          and cleans the project paths that are not protected.
          """
          for path in self.config.clean_targets:
              logger.info("Checking {}/*".format(path))
              if not self.__is_protected_path(path):
                  shutil.rmtree(path, True)
                  logger.info(" Cleaned {}/*".format(path))
              else:
                  logger.info("ERROR: not cleaning {}/* because it is "
                              "protected".format(path))
          logger.info("Finished cleaning all paths.")
  
new_contents: import os.path
  import os
  import shutil
  
  from dbt.task.base import ProjectOnlyTask
  from dbt.logger import GLOBAL_LOGGER as logger
  
  
  class CleanTask(ProjectOnlyTask):
  
      def __is_project_path(self, path):
          proj_path = os.path.abspath('.')
          return not os.path.commonprefix(
              [proj_path, os.path.abspath(path)]
          ) == proj_path
  
      def __is_protected_path(self, path):
          """
          This function identifies protected paths, so as not to clean them.
          """
          abs_path = os.path.abspath(path)
          protected_paths = self.config.source_paths + \
              self.config.test_paths + ['.']
          protected_abs_paths = [os.path.abspath(p) for p in protected_paths]
          return abs_path in set(protected_abs_paths) or \
              self.__is_project_path(abs_path)
  
      def run(self):
          """
          This function takes all the paths in the target file
          and cleans the project paths that are not protected.
          """
          for path in self.config.clean_targets:
              logger.info("Checking {}/*".format(path))
              if not self.__is_protected_path(path):
                  shutil.rmtree(path, True)
                  logger.info(" Cleaned {}/*".format(path))
              else:
                  logger.info("ERROR: not cleaning {}/* because it is "
                              "protected".format(path))
          logger.info("Finished cleaning all paths.")
  
subject: fix protected_abs_paths