Coding in Python, print command does not act as expected

Question

inventory = {
    'gold' : 500, 
    'sack' : ['rock', 'copper wire'],
    'weapons rack' : ['pistol', 'MP-5', 'grenade'],
    'ammo pouch' : ['Pistol ammo', 'MP-5 ammo'],
}

print "You have " + inventory['gold'][0] + " coins!"

I get the error message:

  line 8, in <module>
    print "You have " + inventory['gold'] + " coins!"
TypeError: 'int' object has no attribute '__getitem__'

why wouldn't the console print out "You have 500 gold coins!"

Martijn Pieters · Accepted Answer · 2014-10-19 01:10:13Z

2

Your gold entry is not a list; you are trying to index the 500 integer. Remove the [0]:

print "You have", inventory['gold'], "coins!"

Note that I used commas, not +, because you cannot just concatenate strings and integers like that. The alternative would be to convert the integer to a string first:

print "You have " + str(inventory['gold']) + " coins!"

You could also put the gold value into a list:

inventory = {
    'gold' : [500], 
    'sack' : ['rock', 'copper wire'],
    'weapons rack' : ['pistol', 'MP-5', 'grenade'],
    'ammo pouch' : ['Pistol ammo', 'MP-5 ammo'],
}

Note the [...] square brackets around the 500 value there. Then your [0] applies again:

print "You have", inventory['gold'][0], "coins!"

answered Oct 19, 2014 at 1:10

Martijn Pieters

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