code: def sys_paths(self, filters=None):
          
  
          paths = set()
  
          packages = list(self.packages(filters=filters))
  
          for module in self.modules(filters=filters):
              parent = text_type(Path(module).parent)
              if parent not in packages:
                  paths.add(parent)
  
          paths.update(self.topmost_directories([
              text_type(Path(package).parent)
              for package in packages
          ]))
  
          return list(paths)
docs: Produces a list of paths that would be suitable to use in ``sys.path``
          in order to access the Python modules/packages found in this project.
  
          :param filters:
              the regular expressions to use when finding files in the project.
              If not specified, all files are returned.
          :type filters: list(str)