Python - getting values from 2d arrays

Question

I have a 2d array:

[[], ['shotgun', 'weapon'], ['pistol', 'weapon'], ['cheesecake', 'food'], []]

How do I call a value from it? For example I want to print (name + " " + type) and get

shotgun weapon

I can't find a way to do so. Somehow print list[2][1] outputs nothing, not even errors.

Solution 1

>>> mylist = [[], ['shotgun', 'weapon'], ['pistol', 'weapon'], ['cheesecake', 'f
ood'], []]
>>> print mylist[2][1]
weapon

Remember a couple of things,

1. don't name your list, list... it's a python reserved word
2. lists start at index 0. so mylist[0] would give []
   similarly, mylist[1][0] would give 'shotgun'
3. consider alternate data structures like dictionaries.

Solution 2

Accessing through index works with any sequence (String, List, Tuple): -

>>> list1 = [[], ['shotgun', 'weapon'], ['pistol', 'weapon'], ['cheesecake', 'food'], []]
>>> list1[1]
['shotgun', 'weapon']
>>> print list1[1][1]
weapon
>>> print ' '.join(list1[1])
shotgun weapon
>>>  

You can use join on the list, to get String out of list..

Comments

[Борис Цейтлин]

Would use dictionaries if I didn't plan to add other things into these lists. For example if I have ["shotgun", "weapon", "common"] it is no longer a pair :) Thanks anyway

[Rohit Jain]

Why a down vote?? Do I deserve a comment here from the downvoter??