python - From list to tree representation -


hello have list (in python 3) :

lista=[ ['a','b','c','d'],['b','f','g'],['c','h','i'],['d'],['h'],['i'],['f'],['g']]

and i'm trying translate in nested list this

['a',['b',['f'],['g']],['c',['h'],['i']],['d']]]

so it's tree :

                          / | \           b   c  d          /\   /\        f  g   h

i thought use generator this

listb = [ lista[0][0]] + [x x in lista[1:] ]

but don't know how iterate recursively through whole list. thank you!

i think should work you:

lista=[ ['a','b','c','d'],['b','f','g'],['c','h','i'],['d'],['h'],['i'],['f'],['g']]  def tree(root, d):     return [root] + [tree(k, d) k in d[root]]  d = {i[0]: i[1:] in lista}  root = 'a' print(tree(root, d))

which prints out:

['a', ['b', ['f'], ['g']], ['c', ['h'], ['i']], ['d']]

although believe dictionary (d) might serve better.


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