Harrison/jinja formatter (#385)

Co-authored-by: Benjamin <BenderV@users.noreply.github.com>

docs/examples/prompts/prompt_management.ipynb

@@ -71,7 +71,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 11,
    "id": "094229f4",
    "metadata": {},
    "outputs": [],
@@ -151,6 +151,59 @@
     "multiple_input_prompt.format(adjective=\"funny\", content=\"chickens\")"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "b2dd6154",
+   "metadata": {},
+   "source": [
+    "## Alternative formats\n",
+    "\n",
+    "This section shows how to use alternative formats besides \"f-string\" to format prompts."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "id": "53b41b6a",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Jinja2\n",
+    "template = \"\"\"\n",
+    "{% for item in items %}\n",
+    "Question: {{ item.question }}\n",
+    "Answer: {{ item.answer }}\n",
+    "{% endfor %}\n",
+    "\"\"\"\n",
+    "items=[{\"question\": \"foo\", \"answer\": \"bar\"},{\"question\": \"1\", \"answer\": \"2\"}]\n",
+    "jinja2_prompt = PromptTemplate(\n",
+    "    input_variables=[\"items\"], \n",
+    "    template=template,\n",
+    "    template_format=\"jinja2\"\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 14,
+   "id": "ba8aabd3",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'\\n\\nQuestion: foo\\nAnswer: bar\\n\\nQuestion: 1\\nAnswer: 2\\n'"
+      ]
+     },
+     "execution_count": 14,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "jinja2_prompt.format(items=items)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "1492b49d",
@@ -602,7 +655,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.6"
+   "version": "3.10.8"
   }
  },
  "nbformat": 4,