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by Glench
2689 days ago
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I'm glad this issue is getting some attention. I found the "Exceptions are not exceptional" section to capture something I've noticed several times — that code in Python can fail at a huge number of points even in a small function, nevermind the many exceptions that might happen in nested functions, or code we're using from libraries. We should have language-level mechanisms for being explicit about what's supposed to happen when unexpected situations happen. |
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This is why unit-tests are really important in Python.
> We should have language-level mechanisms for being explicit about what's supposed to happen when unexpected situations happen.
That's implemented as a try-except block. You're not supposed to catch errors at the low level unless you're explicitly handling them. If there's an error, bubble it up to the main().
Python's try-except can catch classes, sub-classes, and/or groups (tuples) of classes. It's important to categorize your errors.