[Solved] How can you safely update a shared list from multiple background threads in Flask? — Ans: Use a threading.Lock to synchronize access to the list | Flask

Flask - Background Tasks

How can you safely update a shared list from multiple background threads in Flask?

AUse a global variable without any locks

BCreate a new list inside each thread and ignore synchronization

CUse a threading.Lock to synchronize access to the list

DUse print statements to debug list updates

Step-by-Step Solution

Solution:

Step 1: Understand thread safety
Multiple threads modifying shared data can cause race conditions.
Step 2: Use locks to prevent simultaneous access
threading.Lock ensures only one thread modifies the list at a time.
Final Answer:
Use a threading.Lock to synchronize access to the list -> Option C
Quick Check:
Locks protect shared data in threads [OK]

Quick Trick: Protect shared data with locks in multithreading [OK]

Common Mistakes:

MISTAKES

Master "Background Tasks" in Flask

9 interactive learning modes - each teaches the same concept differently

More Flask Quizzes

How can you safely update a shared list from multiple background threads in Flask?