Combining And Associating Multiple Dictionaries

I want to generate a dictionary in which six different combination of three different groups of pictures are organized. Thats why I computed a dictionary: import glob, os, random,

Solution 1:

To answer the first point, you can use itertools.permutations:

import itertools as it

elements = [im_a, im_n, im_e]
perms = it.permutations(elements, 2)    # 2 -> take pairs
pic_list = [sum(perm, []) for perm in perms]

The order returned is lexicographic, i.e.

im_a + im_n, im_a + im_e, im_n + im_a, im_n + im_e, im_e + im_a, im_e + im_n

The respective cond_list can be built by simply doing:

cond_list = [im_a] * 2 + [im_n] * 2 + [im_e] * 2

Or, more generally:

d = len(elements) - 1cond_list = list(chain.from_iterable([el]*d for el in elements))
# orcond_list = sum(([el]*d for el in elements), [])