from threading import Thread
import random

my_matrix = [[[random.randrange(0, 10) for i in range(2)] for j in range(2)] for k in range(2)]
print(my_matrix)

minim = min(min(min(my_matrix[q]) for q in range(2)))

thread1 = Thread(target=minim, args=(my_matrix, 0, len(my_matrix) // 2))
thread2 = Thread(target=minim, args=(my_matrix, len(my_matrix) // 2, len(my_matrix)))
thread1.start()
thread2.start()
thread1.join()
thread2.join()
print(minim)