Câu hỏi phỏng vấn Python
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Why use else in try/exc...

Câu trả lời

The else clause in a Python try/except construct provides a clear and structured way to execute code that should only run if no exceptions were raised in the try block. Here are the main reasons for using the else clause in this context:

  1. Clarity and Readability: Using the else clause explicitly communicates that certain code should run only if the try block did not raise an exception. This makes the code easier to read and understand, as it clearly separates the normal execution from the exception handling[1][2].

  2. Avoiding Accidentally Catching Exceptions: Code in the else block will not catch exceptions unless explicitly re-raised. This is beneficial because it prevents the else block from accidentally catching exceptions that are meant to be caught by the preceding except blocks. This separation ensures that exceptions are handled where intended, and not by other parts of the code[2].

  3. Performance: By limiting the amount of code within the try block, you minimize the part of the code that is directly under the exception monitoring mechanism. This can potentially lead to a slight performance improvement, as less code is being monitored for exceptions[1].

  4. Logical Separation: The else clause helps in logically separating the code that does not need exception handling from the code that does. This separation can help in scenarios where the try block is...

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