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What is the expected behavior if you run a Flask app with app.run(debug=True) in a production environment?

medium📝 Predict Output Q5 of 15
Flask - Deployment
What is the expected behavior if you run a Flask app with app.run(debug=True) in a production environment?
AThe app runs with live reload and shows debug info on errors
BThe app runs silently without any debug info
CThe app refuses to start and throws an error
DThe app automatically disables debug mode
Step-by-Step Solution
Solution:
  1. Step 1: Understand debug=True effects

    Debug mode enables live reload and detailed error pages.
  2. Step 2: Recognize risks in production

    Running with debug=True in production exposes debug info and reloads on code changes.
  3. Final Answer:

    The app runs with live reload and shows debug info on errors -> Option A
  4. Quick Check:

    Debug True behavior = A [OK]
Quick Trick: Never run debug=True in production to avoid info leaks [OK]
Common Mistakes:
MISTAKES
  • Assuming debug=True disables debug info
  • Thinking app refuses to start with debug=True
  • Believing debug mode disables live reload

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