langchain/docs/extras/modules/model_io/prompts/prompt_templates/formats.mdx

# Template formats

`PromptTemplate` by default uses Python f-string as its template format. However, it can also use other formats like `jinja2`, specified through the `template_format` argument.

To use the `jinja2` template:

```python
from langchain.prompts import PromptTemplate

jinja2_template = "Tell me a {{ adjective }} joke about {{ content }}"
prompt = PromptTemplate.from_template(jinja2_template, template_format="jinja2")

prompt.format(adjective="funny", content="chickens")
# Output: Tell me a funny joke about chickens.
```

To use the Python f-string template:

```python
from langchain.prompts import PromptTemplate

fstring_template = """Tell me a {adjective} joke about {content}"""
prompt = PromptTemplate.from_template(fstring_template)

prompt.format(adjective="funny", content="chickens")
# Output: Tell me a funny joke about chickens.
```

Currently, only `jinja2` and `f-string` are supported. For other formats, kindly raise an issue on the [Github page](https://github.com/langchain-ai/langchain/issues).