CODEWITHSUNDEEP
pythondictionary
Thoran Landers
Thoran Landers

Reputation: 3

Python 3 Values of a Dictionary

I am working on a blackjack game and need to collect the score of all the cards the player has. When i use the following code I get unhashable type: 'list' error.

Cards is a dictionary that holds all the cards and their respective blackjack points score and p a dictionary which holds the players cards (as they would be keys in the cards dictionary.

score = cards[list(p.values())]

Any help on how to do this would be greatly appreciated.

Upvotes: 0

Views: 237

Answers (3)

Shubho Shaha
Shubho Shaha

Reputation: 2139

You got that error just because of you are trying to use list as dictionary keys, which is prohibited in Python. [to know why look at @SyntaxError answer]

try following code instead of yours

score = sum(cards[value_of_p] for value_of_p in p.values())

Upvotes: 1

louis_guitton
louis_guitton

Reputation: 5677

That error means that lists in python can't be used as dictionary keys.

What you want is to access the dictionary values for each element of that list, so try to use a list comprehension.

score = sum(cards[c] for c in p.values())

Upvotes: 2

SyntaxError
SyntaxError

Reputation: 370

A list can never be the key of a dictionary.

Why Lists Can't Be Dictionary Keys

Upvotes: 1

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