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What is the main purpose of creating custom middleware in a Flask application?

easy📝 Conceptual Q11 of 15
Flask - Middleware and Extensions
What is the main purpose of creating custom middleware in a Flask application?
ATo run code before and after each request is processed by Flask
BTo define new routes and views in the Flask app
CTo replace Flask's built-in request handling completely
DTo create database models for the application
Step-by-Step Solution
Solution:
  1. Step 1: Understand middleware role

    Middleware runs code around request processing, before and after Flask handles requests.
  2. Step 2: Compare options

    Only To run code before and after each request is processed by Flask describes this behavior. Other options describe unrelated tasks.
  3. Final Answer:

    To run code before and after each request is processed by Flask -> Option A
  4. Quick Check:

    Middleware purpose = run code around requests [OK]
Quick Trick: Middleware wraps requests to add extra processing [OK]
Common Mistakes:
MISTAKES
  • Confusing middleware with route creation
  • Thinking middleware replaces Flask core
  • Mixing middleware with database models

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