code: def copy_pkg(self, filename, id_=-1):
          
          self._copy(filename, id_=id_, file_type=PKG_FILE_TYPE)
docs: Copy a package to the distribution server.
  
          Bundle-style packages must be zipped prior to copying.
  
          Args:
              filename: Full path to file to upload.
              id_: ID of Package object to associate with, or -1 for new
                  packages (default).