# Docstrings
## Introduction
In this tutorial, you will learn how to use the `Docstring` widget in the Supervisely app. The `Docstring` widget allows you to display a given docstring as HTML-formatted content.
[Read this tutorial in the developer portal.](https://developer.supervisely.com/app-development/apps-with-gui/docstring)
## Function signature
```python
Docstring(
content="",
is_html=False,
widget_id=None,
)
```
## Parameters
| Parameters | Type | Description |
| :---------: | :----: | :-------------------------------------------------: |
| `content` | `str` | `HTML` content |
| `is_html` | `bool` | Determine if the given content has an `HTML` format |
| `widget_id` | `str` | ID of the widget |
### content
Determine input `HTML` content.
**type:** `str`
**default value:** `""`
```python
docstring = Docstring(content="Some content")
```
### is\_html
Determine if the given content has an `HTML` format.
**type:** `bool`
**default value:** `False`
```python
docstring = Docstring(content="Some title
some text
", is_html=True)
```
### widget\_id
ID of the widget.
**type:** `str`
**default value:** `None`
## Methods and attributes
| Attributes and Methods | Description |
| :----------------------------------------: | -------------------------- |
| `set_content(content: str, is_html: bool)` | Set `Docstring` content |
| `get_content()` | Return `Docstring` content |
| `clear()` | Clear `Docstring` content |
## Mini App Example
You can find this example in our Github repository:
[supervisely-ecosystem/ui-widgets-demos/misc/docstring/src/main.py](https://github.com/supervisely-ecosystem/ui-widgets-demos/blob/master/misc/docstring/src/main.py)
### Import libraries
```python
import os
from dotenv import load_dotenv
import supervisely as sly
from supervisely.api.image_api import ImageApi # we will use ImageApi class docstring as examples
from supervisely.app.widgets import Card, Container, Docstring
```
### Init API client
First, we load environment variables with credentials and init API for communicating with Supervisely Instance:
```python
load_dotenv("local.env")
load_dotenv(os.path.expanduser("~/supervisely.env"))
api = sly.Api()
```
### Prepare contents for `Docstring` widget
**You can use 2 types of content:**
* raw docstring as a `str` type
```python
docstring_example_1 = ImageApi.__doc__
```
* html format string
```py
docstring_example_2 = """
| Class name | Images count | Labels count |
| Lemon | 6 | 6 |
| Kiwi | 6 | 20 |
"""
```
### Initialize `Docstring` widgets and set content types and values
```python
docstring_1 = Docstring(content=docstring_example_1)
docstring_2 = Docstring()
docstring_2.set_content(content=docstring_example_2, is_html=True)
```
### Create app layout
Prepare a layout for the app using `Card` widget with the `content` parameter and place widget that we've just created in the `Container` widget.
```python
card_1 = Card(title="Docstring example 1", content=docstring_1)
card_2 = Card(title="Docstring example 2", content=docstring_2)
layout = Container(widgets=[card_1, card_2])
```
### Create app using layout
Create an app object with the layout parameter.
```python
app = sly.Application(layout=layout)
```
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://developer.supervisely.com/app-development/widgets/text-elements/docstrings.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.