FAQ: Code Challenge: Dictionaries - Largest Value

This community-built FAQ covers the “Largest Value” exercise from the lesson “Code Challenge: Dictionaries”.

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This exercise can be found in the following Codecademy content:

Learn Python 3

FAQs on the exercise Largest Value

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8 posts were split to a new topic: Solution Sharing

Just want to confirm, there is no method or function i.e. ‘.whatever’ to return all the keys holding a given value?

Confirmed. There is no built-in method to do that.

1 Like

This is another exercise that needs some tweaking. We need to use -inf which is something that never came up before, there’s just no way for newbie like me to do this without checking the hint which is demotivating.

don’t need it. do you use inf to determine which of three carrots is the largest?

According to the instructions:

The function should return the key associated with the largest value in the dictionary.

What if the largest value corresponds to more than one key in the dictionary?
It might be a possibility which is not outside the context of the exercise.
The solution given, does not seem to cover that case.

If we try to

print(max_key({1:100, 2:100, 3:4, 4:10}))

the output is 1 (the first key in order, corresponding to the largest value), although the output should be 1,2.

if both keys refer to a maximum value then either is a valid response

you’ve got a bigger problem if there isn’t a max, if it’s empty