code: def remove_subset(set_, subset):
      
      ensure_set(set_)
      ensure_iterable(subset)
  
      for elem in subset:
          set_.remove(elem)
docs: Remove a subset from given set.
  
      This is essentially an extension of :func:`set.remove`
      to work with more than one set element.
  
      :raise KeyError: If some element from ``subset`` is not present in ``set_``
  
      .. versionadded:: 0.0.2