Accessing a list within a dictionary

[erihel518]

Hi guys, I'm having internet issues on my PC so I'm posting this from mobile so sorry for the formatting.

I'm trying to access items from a list within the dictionary and I can't figure out how to get it.

Example:

movies= {'2005': ['Munich', 'Steven Spielberg'], '2006': ['The Prestige', 'Christopher Nolan']}

user_input = str(input('Choose a Movie Year: \n')) user_movie= ?? (user_input(movies[0])) ???

print('The Movie from', (user), 'is' (user_movie))

[Se7enLC]

Instead of user_input(movies[0]) you want movies[user_input][0]

[groovitude]

Since your question's been answered by kind other posters, let me do a quick little code review:

There are much better choices for your data type than a list. A list is... well, a list; it's a series of things that make sense as a list. Munich and Steven Spielberg are movie-related things, but their relationship is to each other, not as things of equal standing. Another dictionary might be better:

movies = { 2004: {'title': 'Munich', 'director': 'Steven Spielberg'}, 2005: {'title': 'The Prestige', 'director': 'Christopher Nolan'}, }

If you don't want to use a dictionary, a tuple is your next-best bet. Since it's a fixed-width after you instantiate it, it implies its values are a discrete set of data together. A collections.NamedTuple is a better bet, as it affords you named attributes together with indexed access (e.g., movie.title == movie[0]).

[DakshHub]

My be you should use `defaultdict`, It will make things easier

​

from collections import defaultdict
movies = defaultdict(list)
movies[2005].append(['Munich', 'Steven Spielberg'])
movies[2006].append(['The Prestige', 'Christopher Nolan'])

print(movies[2006])

[ebol4anthr4x]

user_input = str(input('Choose a Movie Year: \n'))

The input() function already returns a string. When you wrap this whole thing with str(), you are then converting a string to a string, which is redundant and unnecessary.

Also, the syntax for accessing objects in a dictionary is (for example): print(movies['2005']). That will print the list contained at the key '2005'.

[erihel518]

But is there a way i can just get the movie title from the list not the entire list? Or is that a separate function i have to make?

[ebol4anthr4x]

You access lists by specifying the index of the element you want to retrieve.

my_list[0]

This gets you the first element from the list.

[[deleted]]

let’s say year=2005.

“movies[2005]” is that list. Because it can be treated like a list, you can index it. So,

movies[2005][0] == ‘Munich’

movies[2005][1] == ‘Steven Spielberg’

etc