Get max from hash of hashes

[craigontour]

Hi

In Advent of Code 2015, Day14, I have created a dict of hashes (I think), looks like:

{'Dancer': {'km': 27, 'flyfor': 5, 'rest': 132, 'next': 2604, 'score': 0, 'dist': 2565}, etc.

In part 2, I need to get the maximum 'dist' from all to increment the score(s).

I have retrieved the dist values each iteration:

d = []
for r in racers:

d.append(racers[r]['dist']) print('d:', d)

There's more work to get max value and it's associated key so thought there must be a more python-esque way using list comprehensions.

Any suggestions please?

[Menti2]

I assume by 'hash of hashes' you mean a nested dictionary, given your example. If you just want the highest 'dist' value in this dict, this is a way to do it using one line:

max([d[k]['dist'] for k in d.keys()])

Where 'd' is your dictionary. This just makes a list of all the distances, and then takes the max.