#
# us.1.py
#

# SimpleSet implementerer en "Simpel Mængde"

class SimpleSet:

  def __init__(self):
    self.list = []
    
  def is_empty(self):
    return self.list == []
    
  def is_member(self, element):
    return element in self.list
    
  def insert(self, element):
    if not self.is_member(element):
      self.list.append(element)
      
  def delete_any(self):
    if self.is_empty():
      raise "Set empty error"
    else:
      element = self.list[0]
      del self.list[0]
      return element