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KwickClips Python · 39 sec · free

Why avoid a bare except?

Short answer. It catches every exception, even your own bugs.

What does int("12a") raise?

ValueError.

Remember

Name the exception you expect
A bare except hides bugs

One except that catches everything hides your bugs. Do this instead. Twelve a has a letter, so int raises value error. The except names value error, so it catches only that. Name the exception you expect. A bare except hides bugs.

This clip is from the full lesson: Exception Handling: try, except, else and finally — 7 minutes, with the tables, the quick answers and the whole lesson in text.

Useful for: CBSE Class 12 Computer Science (083), Programming All levels Python, Programming All levels Python, Programming All levels Python

More KwickClips from this lesson

Table of crashing lines: 1000 / 0, int of ten and [1, 2][5], with their exception names.What is an exception?42 secFlowchart of try, except, else and finally paths.Does else run when there is an exception?44 secCode raising ValueError when age is -5 and printing Bad age.What does raise do?41 sec
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