Question

I have defined a tuple thus:
(slot, gameid, bitrate)

and created a list of them called myListOfTuples. In this list might be tuples containing the same gameid.

E.g. the list can look like:

[
   (1, "Solitaire", 1000 ),
   (2, "Diner Dash", 22322 ),
   (3, "Solitaire", 0 ),
   (4, "Super Mario Kart", 854564 ),
   ... and so on.
]

From this list, I need to create a dictionary of pairs – ( gameId, bitrate), where the bitrate for that gameId is the first one that I came across for that particular gameId in myListOfTuples.

E.g. From the above example – the dictionary of pairs would contain only one pair with gameId “Solitaire” : ("Solitaire", 1000 ) because 1000 is the first bitrate found.

NB. I can create a set of unique games with this:

uniqueGames = set( (e[1] for e in myListOfTuples ) )

Answer 1

For python2.6

dict(x[1:] for x in reversed(myListOfTuples))

If you have Python2.7 or 3.1, you can use katrielalex’s answer