Example data in schema in FastAPI - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of example data in a FastAPI schema?

Example data helps show what kind of input or output the API expects or returns. It makes the API easier to understand and test.

beginner

How do you add example data to a Pydantic model in FastAPI?

You add example data by using the <code>Config</code> class inside the model and setting <code>schema_extra</code> with an <code>example</code> dictionary.

beginner

Show a simple example of a Pydantic model with example data.

class Item(BaseModel):<br>  &nbsp;&nbsp;name: str<br>  &nbsp;&nbsp;price: float<br>  &nbsp;&nbsp;class Config:<br>  &nbsp;&nbsp;&nbsp;&nbsp;schema_extra = {<br>  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;"example": {"name": "Apple", "price": 1.2}<br>  &nbsp;&nbsp;&nbsp;&nbsp;}<br>This example shows an item with a name and price.

beginner

Why is example data useful in FastAPI's automatic docs?

Example data appears in the docs so users can see sample inputs and outputs. This helps them understand how to use the API without guessing.

intermediate

Can you add multiple examples in FastAPI schemas?

Yes, you can add multiple examples by using examples instead of example in schema_extra. Each example has a name and value.

How do you add example data to a Pydantic model in FastAPI?

A By adding a method called example()

B Using the Config class with schema_extra and example

C Using a decorator @example_data

D By setting an attribute called example_data

Example data is added inside the Config class using schema_extra with an example dictionary.

What is the benefit of example data in FastAPI docs?

A It makes the docs colorful

B It hides sensitive data

C It shows sample inputs and outputs to help users understand the API

D It speeds up the API response

Example data helps users by showing sample inputs and outputs in the docs.

Which keyword is used inside schema_extra to provide a single example?

A example

B sample

C examples

D demo

The keyword 'example' is used for a single example inside schema_extra.

How can you provide multiple examples in FastAPI schema?

A Use multiple schema_extra blocks

B Use a separate file for examples

C Add a list to the example keyword

D Use the examples keyword inside schema_extra with named examples

Multiple examples are provided using the 'examples' keyword with named example objects.

Where does FastAPI show the example data you add to schemas?

A In the automatic interactive API docs (Swagger UI and ReDoc)

B In the API response only

C In the server logs

D In the database

FastAPI shows example data in the automatic API docs like Swagger UI and ReDoc.

Explain how to add example data to a Pydantic model in FastAPI and why it is helpful.

Think about the Config class and schema_extra attribute.

Describe how you can provide multiple example inputs in a FastAPI schema and where these examples appear.

Use 'examples' instead of 'example' for multiple samples.