David wrote:

[snip]
#!/usr/bin/python

person = {'Lary':43,'Joan':24}

choice = 0
while choice != '-1':
   if choice == '':
       print "You must enter Lary or Joan to continue! (-1 to quit): "
   choice = raw_input(
           "Who's age do want to know, Lary or Joan? (-1 to quit): ")
   if choice == 'Lary':
       print "Lary's age is:", person.get('Lary')

   elif choice == 'Joan':
       print "Joan's age is:", person.get('Joan')

   else:
       print "Goodbye!"


Consider leveraging the dictionary (and some other"Pythonic" refinements). Separate the logic from the data. Now you can add more names and ages without changing the logic.

#!/usr/bin/python

person = {'Lary':43, 'Joan':24, 'Bob':68}
keys = person.keys()
names = ', '.join(keys[:-1]) + ' or ' + keys[-1]
while True:
choice = raw_input("Who's age do want to know, %s? (-1 to quit): " % names)
  age = person.get(choice, None)
  if age is not None:
     print choice + "'s age is:", age
  elif choice == "-1":
     print "Goodbye!"
     break
  else:
     print "Invalid choice "  + choice


--
Bob Gailer
919-636-4239 Chapel Hill, NC

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