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I. The Basics > 4. Error Handling and Debugging

Chapter 4. Error Handling and Debugging

Errors, bugs, and therefore, debugging, are a part of life for a programmer. As the saying goes, if you haven’t found any mistakes, then you aren’t trying hard enough.

Dealing with errors actually involves two very different processes: error handling and debugging. Error handling is a combination of coding and methodology that allows your program to anticipate user and other errors. It allows you to create a robust program. Error handling does not involve weeding out bugs and glitches in your source code, although some of the error-handling techniques covered in this chapter can be used to great advantage at the debugging stage. In general, error handling should be part of your overall program plan, so that when you have an error-free script, nothing is going to bring it to a screeching halt. With some sturdy error handling in place, your program should be able to keep running despite all the misuse that your users can — and certainly will — throw at it.


  

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