Environment variable management in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to load environment variables using Pydantic BaseSettings.

FastAPI

from pydantic import BaseSettings

class Settings(BaseSettings):
    app_name: str

settings = Settings()
print(settings.[1])

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

Aenv_var

Bload_env

Capp_name

Dconfig

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to call a method that does not exist on the settings instance.

Using a wrong attribute name that is not defined in the Settings class.

The app_name attribute is accessed from the settings instance to get the environment variable value.

2fill in blank

medium

Complete the code to specify a custom environment file for Pydantic BaseSettings.

FastAPI

from pydantic import BaseSettings

class Settings(BaseSettings):
    debug: bool

    class Config:
        env_file = [1]

settings = Settings()
print(settings.debug)

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

A"variables.txt"

B"config.json"

C"settings.yaml"

D".env"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a file format that Pydantic does not parse by default.

Forgetting to include quotes around the filename string.

The env_file attribute in the Config class tells Pydantic to load environment variables from a file named .env.

3fill in blank

hard

Fix the error in the code to correctly read an integer environment variable.

FastAPI

from pydantic import BaseSettings

class Settings(BaseSettings):
    port: int

settings = Settings()
print(settings.[1])

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

Aport

BPORT

Cport_number

Dget_port

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase or different names that do not match the attribute.

Trying to call a method instead of accessing the attribute.

The attribute name port must match the class attribute to access the integer environment variable correctly.

4fill in blank

hard

Fill both blanks to create a Pydantic Settings class that reads a string and a boolean from environment variables.

FastAPI

from pydantic import BaseSettings

class Settings(BaseSettings):
    [1]: str
    [2]: bool

settings = Settings()
print(settings.api_key, settings.debug_mode)

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

Aapi_key

Bdebug

Cdebug_mode

Dapi_secret

Attempts:

3 left

💡 Hint

Common Mistakes

Using attribute names that do not match the environment variables.

Mixing up the types or names for the variables.

The class defines api_key as a string and debug_mode as a boolean to read those environment variables.

5fill in blank

hard

Fill all three blanks to create a Settings class that reads a host string, a port integer, and a debug boolean from environment variables.

FastAPI

from pydantic import BaseSettings

class Settings(BaseSettings):
    [1]: str
    [2]: int
    [3]: bool

settings = Settings()
print(settings.host, settings.port, settings.debug)

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

Ahost

Bport

Cdebug

Dhostname

Attempts:

3 left

💡 Hint

Common Mistakes

Using inconsistent or incorrect attribute names.

Not matching the type annotations to the variable types.

The class attributes host, port, and debug correspond to environment variables for host, port, and debug mode.