[Solved] Given this factory function, what will print(app.config['TESTING']) output?def create_app(): app = Flask(__name__) app.config['TESTING'] = True return app app = create_app() | Flask

Flask - Ecosystem and Patterns

Given this factory function, what will print(app.config['TESTING']) output?

def create_app():
    app = Flask(__name__)
    app.config['TESTING'] = True
    return app

app = create_app()

ANone

BTrue

CFalse

DKeyError

Step-by-Step Solution

Solution:

Step 1: Analyze the factory function
The function creates a Flask app and sets 'TESTING' config to True before returning the app.
Step 2: Understand the print statement
After calling create_app(), app.config['TESTING'] is True, so printing it outputs True.
Final Answer:
True -> Option B
Quick Check:
Config value for TESTING = True [OK]

Quick Trick: Config set in factory is accessible after creation [OK]

Common Mistakes:

MISTAKES

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Given this factory function, what will print(app.config['TESTING']) output?