How to calculate minimum value in all variables? Python

Question

I'm confused on how to make a function that calculate the minimum values from all variable

for example

>>>Myscore1 = 6 
>>>Myscore2 =-3
>>>Myscore3 = 10

the function will return the score and True if it is minimum value or else it is False . So from the above example the output will be:

>>>[(6,False),(-3,True),(10,False)]

Is there any reason your scores aren't in a list? Then you could just do min(scores) — Benjamin Gruenbaum
– Benjamin Gruenbaum, Commented May 24, 2013 at 11:18
@BenjaminGruenbaum yeah, it is an assignment and it is written not in a list. — Erika Sawajiri
– Erika Sawajiri, Commented May 24, 2013 at 11:20
I would insist that the scores are in a list. You could for instance first create an empty list, then append the list with new values as they come, i.e.: Myscores = []; Myscores.append(6) etc. — herrfz
– herrfz, Commented May 24, 2013 at 11:52

jamylak · Accepted Answer · 2013-05-24 11:20:15Z

4

scores = [6, -3, 10]
def F(scores):
    min_score = min(scores)
    return [(x, x == min_score) for x in scores]

>>> F(scores)
[(6, False), (-3, True), (10, False)]

answered May 24, 2013 at 11:20

jamylak

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njzk2 · Accepted Answer · 2013-05-24 11:55:03Z

1

Quite simply :

>>> scores = [Myscore1, Myscore2, Myscore3]
>>> [(x, (x == min(scores))) for x in scores]
[(6, False), (-3, True), (10, False)]

answered May 24, 2013 at 11:55

njzk2

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2 Comments

jamylak Over a year ago

note: Be careful of using functions like min repeatedly when dealing with large data structures, it works fine here but can lead to O(N^2) behaviour

njzk2 Over a year ago

@jamylak : it is true. It would be nice, though, if a modern language were able to see that scores cannot change during this line, and therefore min(score) cannot change either.

kiriloff · Accepted Answer · 2013-05-24 11:47:26Z

1

A one liner using enumerate

scores = [6, -3, 10]

import operator
res = [[scores[i], True] 
   if i == min(enumerate(scores), key = operator.itemgetter(1))[0] 
   else [scores[i], False] 
   for i in range(len(scores))]

answered May 24, 2013 at 11:47

kiriloff

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