Select between two minimum keys in python

Question

could someone help me select the minimum value between two keys? For example, if I have the list of dictionaries:

results = [
  {
    "model": "short",
    "score": 34,
    "alt_score": 1
  }, 
  {
    "model": "med",
    "score": 22,
    "alt_score": 11
  }, 
  {
    "model": "tall",
    "score": 42,
    "alt_score": 90
  }, 
  {
    "model": "xtall",
    "score": 83,
    "alt_score": 15
  }, 
]

I want to select the dictionary that has the smallest score OR alt_score. I know how to find the dictionary w/ the smallest score or alt_score individually:

min(results, key=lambda x:x['alt_score'])

but I'm not sure how to look at two keys at once. I would need something like:

min(results, key=lambda x:x['score', 'alt_score])

or

min(results, key=lambda x:x['score'] or x:x['alt_score'])

the result should return:

{
  "model": "short",
  "score": 34,
  "alt_score": 1
}

Thanks in advance!

Amber · Accepted Answer · 2017-11-12 06:51:42Z

6

min(results, key=lambda x:min(x['score'], x['alt_score']))

Lambdas can have pretty much any expression in them, including an internal call to min() to get whichever is smaller for the item, score or alt_score.

answered Nov 12, 2017 at 6:51

Amber

531k89 gold badges643 silver badges558 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Matthias Fripp · Accepted Answer · 2017-11-12 06:52:55Z

3

You could use this:

min(results, key=lambda x: min(x['score'], x['alt_score']))

answered Nov 12, 2017 at 6:52

Matthias Fripp

18.9k5 gold badges36 silver badges49 bronze badges

Comments

UncleT · Accepted Answer · 2017-11-12 07:15:57Z

1

min(results, key=lambda x:min(x['score'], x['alt_score']))

x needs to reference each score for the inner min() comparison.

answered Nov 12, 2017 at 7:15

UncleT

871 silver badge9 bronze badges

Comments

Nimish Bansal · Accepted Answer · 2017-11-12 06:54:24Z

0

results = [
  {
    "model": "short",
    "score": 34,
    "alt_score": 1
  }, 
  {
    "model": "med",
    "score": 22,
    "alt_score": 11
  }, 
  {
    "model": "tall",
    "score": 42,
    "alt_score": 90
  }, 
  {
    "model": "xtall",
    "score": 83,
    "alt_score": 15
  }, 
]

print(min(results, key=lambda x:min(x['score'],x['alt_score'])))

answered Nov 12, 2017 at 6:54

Nimish Bansal

1,7594 gold badges24 silver badges42 bronze badges

Collectives™ on Stack Overflow

Select between two minimum keys in python

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related