Adding probabilities to items in a list of lists

Question

I want to add probabilities to each item in a list, where that list is in another list.

Some psuedo-code:

myList = [ [a, b, c, d], [e, f, g, h], [i, j, k, l], [m, n, o], [p, q, r], [s, t, u] ]

probabilities = [ [0.6, 0.3, 0.075, 0.025], [0.6, 0.3, 0.075, 0.025], [0.6, 0.3, 0.075, 0.025], [0.55, 0.35, 0.1], [0.55, 0.35, 0.1], [0.55, 0.35, 0.1] ]

Is there any way to do achieve this?

Further:

My need for this is to create another list that would look similar to the below...

newList = [ [b, e, k, o, p, s], [a, f, i, m, r, t], ... etc. ] 

where each element was chosen randomly given the probabilities, and no two list in newList are the same. Which I am not sure is achievable.

My code so far:

layers = [list(Path(directory).glob("*.png")) for directory in ("dir1/", "dir2/", "dir3/", "dir4/", "dir5/", "dir6/")]

list_of_prob = [[0.6, 0.3, 0.075, 0.025], [0.6, 0.3, 0.075, 0.025], [0.6, 0.3, 0.075, 0.025], [0.6, 0.3, 0.1], [0.6, 0.3, 0.1], [0.6, 0.3, 0.1]]

rwp = [choices(layers, list_of_prob, k=????)]

rand_combinations = [([choice(k) for k in layers]) for i in choice_indices]

I am not entirely sure what k would be in choices(), ex. number of lists or number of total elements in the lists. Layers is a list of image paths, .pngs, which is identical to the format of "myList" provided above in pseudo code (4 images in dir1, 4 images in dir2, 4 images in dir3, 3 in dir4, 3 in dir5, 3 in dir6).

I already have code to iterate through a list and create random images, but I want some of the images to only be generated x% of the time. Hence my original question. Sorry if I just complicated things, I tried to simplify it.

Answer 1

I converted myList to strings just to make things easy.

This will create combinations and append them to newList, disregarding any combinations that already exist in newList

While loop ends when length of newList is equal to the length of myList

import random

myList = [['a', 'b', 'c', 'd'], 
          ['e', 'f', 'g', 'h'], 
          ['i', 'j', 'k', 'l'], 
          ['m', 'n', 'o'], 
          ['p', 'q', 'r'], 
          ['s', 't', 'u']]

probabilities = [[0.6, 0.3, 0.075, 0.025], 
                 [0.6, 0.3, 0.075, 0.025], 
                 [0.6, 0.3, 0.075, 0.025], 
                 [0.55, 0.35, 0.1], 
                 [0.55, 0.35, 0.1], 
                 [0.55, 0.35, 0.1]]
newList = []

def random_list():
    combo = []
    for d, p in zip(myList, probabilities):
        choice = random.choices(d, p)
        combo.append(''.join(choice))
    return combo

while len(newList) < len(myList):
    a = random_list()
    if a not in newList:
        newList.append(a)

Results of newList:

[['b', 'f', 'k', 'm', 'q', 's'],
 ['a', 'e', 'j', 'm', 'q', 't'],
 ['b', 'f', 'k', 'm', 'q', 'u'],
 ['a', 'f', 'i', 'm', 'p', 's'],
 ['a', 'e', 'i', 'n', 'p', 't'],
 ['b', 'f', 'k', 'm', 'r', 'u']]