help needed with dictionary

[lee]

  hi all,
i am a newbie in python.  i was trying to work with dictionaries.  i
wanted to input values  through command line and store the values in a
dictionary. i mean for the same key , multiple values. can any1
suggest me how can i do it.....thank you....

i tried this, but the old value is replaced by new one, but i want to
store al values entered by user.
kev = {}
if kev.has_key('Name'):
	kev['Name'].append(person_name)
	print 'name is ', kev['Name']
else:
	kev['Name'] = [person_name]
print "kevin's name is %s" % kev['Name']