code: def issuperset(self, other):
          
          if len(self) < len(other):  # Fast check for obvious cases
              return False
          return all(item in self for item in other)
docs: Report whether this set contains another set.
  
          Example:
              >>> OrderedSet([1, 2]).issuperset([1, 2, 3])
              False
              >>> OrderedSet([1, 2, 3, 4]).issuperset({1, 2, 3})
              True
              >>> OrderedSet([1, 4, 3, 5]).issuperset({1, 2, 3})
              False