#
# a program that uses a list but uses exception handling
# to deal with unexpected problems
#
# written e.bonakdarian   dec 2009
#

ingridients = ['ham', 'pineapple', 'onion']
num_ingridients = len(ingridients)

print('You have a choice of %d ingridients, they are:' % num_ingridients)
print ingridients
print

try:
    prompt = 'Please select an ingridient in the range 1 - %d: ' % num_ingridients
    number = input(prompt)
    print('You selected %d which is "%s" - good choice!' % (number, ingridients[number-1]))

except NameError:
    print '\nERROR: You did not specify a valid number.'

except IndexError:
    print '\nERROR: The number you specified (%d) was outside the' % number
    print '       valid range of 1 - %d.' % (num_ingridients)



raw_input('\n<enter> to exit')