Help storing object with the shelve module

File "knutphonedir.py", line 42, in add_contact
    for object in (whole_name):
TypeError: iteration over non-sequence

import shelve


class Phonedir():
	def __init__(self,fname,lname,number):
		self.fname = fname
		self.lname = lname
		self.number = number

	def display(self):
		print (self.fname, self.lname, self.number)
	
	

def add_contact():

	lname = raw_input('Last name: ')
	fname = raw_input('First name: ')
	number = raw_input('Number: ')
	whole_name = (lname + ' ' + fname)
	whole_name = Phonedir(lname,fname,number)
	
	db = shelve.open('knutphonedir.db')
	for object in (whole_name):
		db[object.lname] = object
	db.close()