Randomize list over iterator without consuming

gestform.py

@@ -2,6 +2,7 @@
 # -*- coding: utf-8 -*-
 
 from typing import List
+from random import shuffle
 
 
 MIN = -1000
@@ -10,3 +11,9 @@ MAX = 1000
 
 def generate_numbers_list(mini: int, maxi: int) -> List[int]:
     return list(range(mini, maxi+1))
+
+def randomise_with_iterator(list_from: List[int]) -> int:
+    randomized = list_from.copy()
+    shuffle(randomized)
+    while randomized:
+        yield randomized.pop()

tests/tests_gestform.py

@@ -1,6 +1,9 @@
 from unittest import TestCase
 
-from gestform import generate_numbers_list, MIN, MAX
+from gestform import (
+    generate_numbers_list, MIN, MAX,
+    randomise_with_iterator,
+)
 
 
 class RandomListNumber(TestCase):
@@ -15,3 +18,11 @@ class RandomListNumber(TestCase):
         self.assertNotIn(MIN-1, self.generated)
         self.assertNotIn(MAX+1, self.generated)
 
+    def test_randomised_iterator_over_list(self):
+        count: int = 0
+        for n in randomise_with_iterator(self.generated):
+            with self.subTest(n):
+                self.assertGreaterEqual(n , MIN)
+                self.assertLessEqual(n, MAX)
+            count += 1
+        self.assertEqual(len(self.generated), count)