Refactor for-else example

Author: jerry-git

notebooks/intermediate/idiomatic_loops.ipynb

@@ -332,10 +332,9 @@
    "source": [
     "found = False\n",
     "for val in data:\n",
-    "    if isinstance(val, str):\n",
-    "        if val.lower() == 'python':\n",
-    "            found = True\n",
-    "            break\n",
+    "    if str(val).lower() == 'python':\n",
+    "        found = True\n",
+    "        break\n",
     "if not found:\n",
     "    raise ValueError(\"Nope, couldn't find.\")"
    ]
@@ -354,9 +353,8 @@
    "outputs": [],
    "source": [
     "for val in data:\n",
-    "    if isinstance(val, str):\n",
-    "        if val.lower() == 'python':\n",
-    "            break\n",
+    "    if str(val).lower() == 'python':\n",
+    "        break\n",
     "else:\n",
     "    raise ValueError(\"Nope, couldn't find.\")"
    ]