Regarding how to randomizing list with having equal probability

[Pedroski55]

import itertools

images = ['im1', 'im2', 'im3', 'im4', 'im5', 'im6', 'im7', 'im8',
          'im9', 'im10', 'im11', 'im12', 'im13', 'im14', 'im15',
          'im16', 'im17', 'im18','im19','im20','im21','im22','im23','im24']

com_set = itertools.combinations(images, 9)
mylist = list(com_set)
len(mylist) # 1307504

# just pick randomly from mylist, you have 1 307 504 choices!