code: def remove(self, value):
          
          def remove_trans(pipe):
              # If we're caching, we'll need to synchronize before removing.
              if self.writeback:
                  self._sync_helper(pipe)
  
              delete_count = pipe.lrem(self.key, 1, self._pickle(value))
              if delete_count == 0:
                  raise ValueError
  
          self._transaction(remove_trans)
docs: Remove the first occurence of *value*.