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Date: Mon, 09 Feb 2015 23:48:14 -0500
From: Dave Angel <davea@davea.name>
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To: python-list@python.org
Subject: Re: TypeError: list indices must be integers, not tuple
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On 02/09/2015 10:05 PM, Dave Angel wrote:
> On 02/09/2015 07:02 PM, Ethan Furman wrote:
>> On 02/09/2015 03:52 PM, james8booker@hotmail.com wrote:
>>> import random
>>> RandomNum = random.randint(0,7)
>>> restraunt = raw_input("What's your favourite takeaway?Pizza, Chinease
>>> or Indian?")
>>> if restraunt == ("Pizza"):
>>>      fav = ("1")
>>>
>>> elif restraunt == ("Chinease"):
>>>      fav = ("2")
>>>
>>> elif restraunt == ("Indian"):
>>>      fav = ("3")
>>>
>>> else:
>>>      print("Try using a capital letter, eg; 'Chinease'")
>>>
>
> So just what is RandomNum supposed to represent?  You've selected it
> from an interval of 0 to 7, but you don't have 8 of anything.  The most
> logical possibility I can figure is you want to use it instead of
> whatever the user has typed into your raw input.  Like in the else
> clause.  If that's the case, you'd want to add a
>       fav = RandomNum
> line in the else clause.
>
> Of course, as Ethan has pointed out, all the other assignments to fav
> want to be integer, not string.  You can't use a string to index a lis.
>
>>> Menu = [["Barbeque
>>> pizza","Peparoni","Hawain"],["Curry","Noodles","Rice"],["Tika
>>> Masala","Special Rice","Onion Bargees"]]
>>>
>>> print Menu[fav,RandomNum]
>
> Now that you've got a single value for fav, just say
>      print Menu[fav]
> to print the submenu.
>
> Now if Ethan has guessed right, that you wanted the random value to
> choose from the submenu, then you would/should have created it after you
> have the submenu, so you know how many possibilities there are.
>
>
> Something like (untested):
> RandomNum = random.randint(0, len(submenu)-1)
>
>
>

Perhaps it's worth suggesting that you use random.choice() instead, and 
use it directly on the sublist.  If you also make your data structure a 
dict of lists, then the whole thing becomes very simple.

(untested)

Menu = {
      "Pizza" : ["Barbeque pizza","Peparoni","Hawain"],
      "Chinease" : ["Curry","Noodles","Rice"],["Tika Masala",
      "Indian" : "Special Rice","Onion Bargees"]
        }

restraunt = raw_input("What's your favourite takeaway?Pizza, Chinease or 
Indian?")

submenu = menu[restraunt]
#you might want some error handling, in case they get it wrong
fooditem = random.choice(submenu)

print fooditem


-- 
DaveA