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In Flask, which code snippet correctly initiates a background thread to run a function named process_data?

easy📝 Syntax Q3 of 15
Flask - Background Tasks
In Flask, which code snippet correctly initiates a background thread to run a function named process_data?
Athreading.Thread(target=process_data).start()
Bapp.run_in_background(process_data)
Cprocess_data.run_async()
Dbackground.start(process_data)
Step-by-Step Solution
Solution:

  1. Step 1: Understand threading in Flask

    Flask itself does not provide a built-in method like run_in_background or run_async. Python's threading.Thread is used to start background threads.

  2. Step 2: Correct syntax

    The correct way to start a thread is by creating a Thread object with the target function and calling start().

  3. Final Answer:

    threading.Thread(target=process_data).start() -> Option A

  4. Quick Check:

    Check for use of threading.Thread and start() [OK]
Quick Trick: Use threading.Thread(target=func).start() to run background tasks [OK]
Common Mistakes:
MISTAKES
  • Using non-existent Flask methods for threading
  • Calling the function instead of passing it as target
  • Forgetting to call start() on the thread

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