      "\n",
      "class TestPermutation(object):\n",
      "\n",
      "    def test_permutation(self, func):\n",
      "        assert_equal(func('', 'foo'), False)\n",
      "        assert_equal(func('Nib', 'bin'), False)\n",
      "        assert_equal(func('act', 'cat'), True)\n",
      "        assert_equal(func('a ct', 'ca t'), True)\n",
      "        print('Success: test_permutation')\n",
      "\n",
 
</s>
    "        assert_equal(func(None, 'foo'), False)\n",
      "\n",
      "class TestPermutation(object):\n",
      "\n",
      "    def test_permutation(self, func):\n",
    "        assert_equal(func(None, 'foo'), False)\n",
      "        assert_equal(func('', 'foo'), False)\n",
      "        assert_equal(func('Nib', 'bin'), False)\n",
      "        assert_equal(func('act', 'cat'), True)\n",
      "        assert_equal(func('a ct', 'ca t'), True)\n",
      "        print('Success: test_permutation')\n",
      "\n",
keep keep keep add keep keep keep keep keep keep
 Polish permutation challenge and solution
arrays_strings/permutation/permutation_challenge.ipynb