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pythonfor-loopmap-function

Map instead of for loop

I have a for loop:

for i in range(len(k_poss)):
    k_poss[i][0] = ' '.join(k_poss[i][0])

Is it possible to use the map function for this instead? I know it could be something like 

map(lambda x: ' '.join(x), k_poss)

but how would I go to the index I want in a map?

Solution

  • You can just loop over k_poss, looping over a range of len of a object is considered non-Pythonic

    for k in k_poss:
     k[0] = ' '.join(k[0])

    which will make things more readable.

    Since you asked, map will also work, but is really not recommended.

    See @Jab's example 

    k_poss = list(map(lambda x: [' '.join(x[0])] + x[1:], iter(k_poss)))

    from taken the comment section if you really want to use map, it's better than the attempts I had in here...