Global exception handler

Your API to update inventory has been getting more use, and some users have started to complain that validation errors encoded in JSON are hard to read. Let's create a global error handler to return request validation errors as plain text.

The RequestValidationError exception has been pre-loaded for you.

This exercise is part of the course

Deploying AI into Production with FastAPI

Exercise instructions

Import the class for plain text responses.
Annotate validation_exception_handler as a global exception handler.
Return a plain text response for any validation exception.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Import class for plain text response
from fastapi.responses import ____

app = FastAPI()

# Create global exception handler
@app.____(RequestValidationError)
async def validation_exception_handler(request, exc):
    # Return plain text response
    return ____(str(exc), status_code=400)

Edit and Run Code

This exercise is part of the course

Deploying AI into Production with FastAPI

AdvancedSkill Level

4.9+

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Start serving your ML model's predictions via FastAPI endpoints. You'll learn to load pre-trained ML models and create API endpoints to serve predictions as serialized responses over HTTP requests. You'll leverage Pydantic data models to validate requests and responses.

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Current Exercise

Exercise 9: Monitoring and logging Exercise 10: Logging time to load a model Exercise 11: Adding a simple health check endpoint Exercise 12: Sharing model parameters with monitoring Exercise 13: Wrap-up