diff --git a/python/scipy-numpy-cheat-sheet.ipynb b/python/scipy-numpy-cheat-sheet.ipynb
index df51c1d..5baab9d 100755
--- a/python/scipy-numpy-cheat-sheet.ipynb
+++ b/python/scipy-numpy-cheat-sheet.ipynb
@@ -256,6 +256,55 @@
     "alist[2:4]"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "We can look for an item in a list of strings"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "cities = ['Rome', 'Paris', 'London', 'Berlin', 'Madrid', 'Athens']"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def find_item(list, item):\n",
+    "    if (item in list):\n",
+    "        return 1\n",
+    "    else:\n",
+    "        return 0"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 20,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "find_item(cities, 'Madrid')"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -2576,7 +2625,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.3"
+   "version": "3.11.5"
   }
  },
  "nbformat": 4,