s = {'a', 'b', 'c', 'd'}

print len(s)  # 4
print max(s)  # d
print id(s)  # 139639003450624
# print index(s)  # NameError: name 'index' is not defined
print unicode(s)  # set(['a', 'c', 'b', 'd'])
# print count(s)  # name 'count' is not defined
