[Solved] Why does the with statement guarantee resource cleanup even if an error occurs inside its block? — Ans: Because it calls the resource's __exit__ method on block exit | Python

Python - Context Managers

Why does the with statement guarantee resource cleanup even if an error occurs inside its block?

ABecause it ignores all errors inside the block

BBecause it closes resources only if no error occurs

CBecause it restarts the block automatically

DBecause it calls the resource's __exit__ method on block exit

Step-by-Step Solution

Solution:

Step 1: Understand the role of __exit__ in context managers
The __exit__ method is called when the block finishes, even if an error happens.
Step 2: Recognize that __exit__ handles cleanup
This method ensures resources are cleaned up regardless of exceptions.
Final Answer:
Because it calls the resource's __exit__ method on block exit -> Option D
Quick Check:
With calls __exit__ on exit = cleanup always [OK]

Quick Trick: With calls __exit__ method to ensure cleanup [OK]

Common Mistakes:

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