code: def is_subset(self, other):
  		
  		if isinstance(other, _basebag):
  			for elem, count in self.counts():
  				if not count <= other.count(elem):
  					return False
  		else:
  			for elem in self:
  				if self.count(elem) > 1 or elem not in other:
  					return False
  		return True
docs: Check that every element in self has a count <= in other.
  
  		Args:
  			other (Set)