Raising and Handling Python Exceptions

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Martin Breuss

33:42

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507-00-overview.mp4

02:02

507-01-differentiating.mp4

03:44

507-02-raise-exception.mp4

05:36

507-03-assert.mp4

04:27

507-04-try-except.mp4

05:47

507-05-else.mp4

03:21

507-06-built-in.mp4

03:25

507-07-finally.mp4

02:50

507-08-summary.mp4

02:30

exceptions.pdf

exceptions course sample code.zip

Description

A Python program terminates as soon as it encounters an error. In Python, an error can be a syntax error or an exception.

In this course, you’ll learn what an exception is and how it differs from a syntax error. After that, you’ll learn about raising exceptions and making assertions. Then, you’ll learn how to catch exceptions to prevent your program from unintentionally ending and to change the control flow of your program:

You’ll learn about the basic use of a try … except block, as well as how to extend it using else and finally.

What You'll Learn?

Differentiate exceptions from syntax errors
Use the assert keyword to check if a certain condition is met
Write custom exceptions that subclass Exception
Catch exceptions with a try … except block
Use the additional keywords else and finally
Catch built-in exceptions

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Python

Martin Breuss

Instructor's Courses

As someone who learned programming primarily through online resources, I feel that I have a good understanding of how important high quality learning material is.

With a background in education, I worked as a coding mentor, code reviewer, curriculum developer, and bootcamp instructor. Quality education and figuring out how to have fun while learning unfamiliar topics effectively has always been a big topic in my life. Real Python provides all that, and I’m happy that I can contribute.

In my day job I create online courses and teach on-site bootcamps around the world with CodingNomads. This position keeps me traveling, teaching, learning, discovering new places and new aspects of Python, as well as getting to know interesting and motivated students year-round.

When you learn to program, you’re learning to instruct a universal tool. People have described programming as the literacy of the 21st century, and I think that there’s something to that idea.

That doesn’t mean that you need to become a full-time software developer to apply your programming skills productively. Most likely there is way how your interests can benefit from being able to skillfully instruct your personal universal tool. And Python is a great language to get started with and also to keep going.

I’m happy to help out with thoughts and resources as well as encouragement.

If you’re stuck, remember that everyone gets stuck and if you feel you don’t know much, keep in mind that most of us feel that way quite often. Take a break, maybe go on a walk outside or do what it takes for you to keep yourself feeling good.

It’s easier to stick with something for the long term when you’re finding enjoyment in what you do. Remember that learning anything new is more of a marathon than a sprint. :)