Python result of a strange function, that I can't reproduce in another language

Question

My python function :

def searchMAX(Dict):
    v=list(Dict.values())
    return list(Dict.keys())[v.index(max(v))]

I can't reproduce it in java to understand what's its output

If I do :

myDico ={0:0.0}
myDico.update({1:1.2}) 
myDico.update({2:11.2}) 
myDico.update({3:17.2})
myMax = searchMAX(myDico)
print(*myMax, sep='\n')

I have this error :

TypeError: print() argument after * must be an iterable, not int

With print(myMax, sep'\n') only retun 3 not a list :( ?

it's the same as `max(Dict.items(), key=lambda item:item[1])[0]`. — Daniel, Nov 27 '16 at 14:13
@das-g, I modifed it, but I've not writting the original function — Harry Cotte, Nov 27 '16 at 14:22

Anthon · Accepted Answer · 2016-11-27T14:35:32.950

2

Assuming that Dict is a Python dict then:

v = list(Dict.values())

make a list of the iterator over the values of Dict and assings it to v

Then

return list(Dict.keys())[v.index(max(v))]

make a list of the keys of Dict and and returns the key that has the maximum value associated with it by finding the index of the maximum value (v.index(max(v))) and using that index on the list.

Thus searchMAX return a key which in your case is always an integer and you cannot pass that to print() with a *. You should do:

print(Max, sep='\n')

edited Nov 27 '16 at 14:35

answered Nov 27 '16 at 14:15

Anthon

69,918
32
186
246

A good answer explaining `*` and `**` is [here](http://stackoverflow.com/questions/36901/what-does-double-star-and-star-do-for-parameters#36908). – daphtdazz Nov 27 '16 at 14:23
And if I understand more, it return ONLY an index ? Not a list as I see in the code ? – Harry Cotte Nov 27 '16 at 14:27
@HarryCotte no it returns a key, that key is the integer `3` from `{3: 17.2}` – Anthon Nov 27 '16 at 14:34
@Anthon thank you. I will try to make the java equivalent now. – Harry Cotte Nov 27 '16 at 14:36

Python result of a strange function, that I can't reproduce in another language

1 Answers1