code: def load(self, filename, append=False):
          
          tmp = cPickle.load(open(self._canonicalize(filename), 'rb'))
          if append:
              self.extend(tmp)
          else:
              self[:] = tmp[:]
          del tmp
docs: Load collection from pickled file *filename*.
  
          *append* determines if the saved collection is added to the current one
          or if it replaces the current content.
  
          If no extension is provided, ".collection" is appended.