Nested models in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the BaseModel class from Pydantic.

FastAPI

from pydantic import [1]

Drag options to blanks, or click blank then click option'

AModel

BField

CSchema

DBaseModel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Model' instead of 'BaseModel'.

Trying to import 'Schema' which is not a Pydantic class.

The BaseModel class is imported from Pydantic to create data models in FastAPI.

2fill in blank

medium

Complete the code to define a nested Pydantic model inside another model.

FastAPI

class Address(BaseModel):
    city: str

class User(BaseModel):
    name: str
    address: [1]

Drag options to blanks, or click blank then click option'

Astr

BAddress

Cint

Ddict

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'str' or 'dict' instead of the nested model class.

Using 'int' which is not appropriate here.

The address field in User should be of type Address to nest the model.

3fill in blank

hard

Fix the error in the nested model definition by completing the missing import.

FastAPI

from pydantic import BaseModel
from typing import [1]

class Item(BaseModel):
    name: str

class Order(BaseModel):
    items: [1][Item]

Drag options to blanks, or click blank then click option'

AList

BDict

CSet

DTuple

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Dict' which requires two type parameters.

Using 'Set' or 'Tuple' which are not lists.

The List type from typing is needed to define a list of nested Item models.

4fill in blank

hard

Fill both blanks to define a nested model with an optional field.

FastAPI

from typing import [1]

class Profile(BaseModel):
    bio: [2] = None

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AOptional

Bstr

Cint

DList

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'int' for bio which should be text.

Not using 'Optional' for a field that can be None.

Optional is imported to allow bio to be optional, and its type is str.

5fill in blank

hard

Fill all three blanks to create a nested model with a list of nested items and a required field.

FastAPI

from typing import [1]

class Product(BaseModel):
    id: int
    name: str

class Cart(BaseModel):
    products: [2][[3]]

Drag options to blanks, or click blank then click option'

AList

BDict

CProduct

DSet

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Dict' or 'Set' instead of 'List'.

Using a wrong class name instead of 'Product'.

Import List to type the products field as a list of Product models.