[Solved] Which of the following is the correct way to define an application factory function in Flask? — Ans: def create_app():\n app = Flask(__name__)\n return app | Flask

Flask - Ecosystem and Patterns

Which of the following is the correct way to define an application factory function in Flask?

Aapp = Flask(__name__)\ndef create_app():\n return app

Bdef create_app():\n return Flask

Cdef create_app():\n app = Flask(__name__)\n return app

Ddef create_app():\n app = Flask\n return app

Step-by-Step Solution

Solution:

Step 1: Check function definition
The factory function must create a Flask instance inside it and return that instance.
Step 2: Validate syntax
def create_app():\n app = Flask(__name__)\n return app correctly creates app = Flask(__name__) and returns it.
Final Answer:
def create_app():\n app = Flask(__name__)\n return app -> Option C
Quick Check:
Factory returns new Flask instance [OK]

Quick Trick: Factory must create and return app inside function [OK]

Common Mistakes:

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Which of the following is the correct way to define an application factory function in Flask?