How can I find same values in a list and group together a new list?

Question

From this list:

N = [1,2,2,3,3,3,4,4,4,4,5,5,5,5,5]

I\'m trying to create:

L = [[1],[2,2],[3,3,3],[4,4,4,4],[5,5,5,5,5]]
         


        

Answer 1

You can do that using numpy too:

import numpy as np

N = np.array([1,2,2,3,3,3,4,4,4,4,5,5,5,5,5])
counter = np.arange(1, np.alen(N))
L = np.split(N, counter[N[1:]!=N[:-1]])

The advantage of this method is when you have another list which is related to N and you want to split it in the same way.