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How to Throw Exceptions in Python

Blog post from Rollbar

Post Details
Company
Date Published
Author
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Word Count
2,545
Language
English
Hacker News Points
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Summary

Software applications are prone to encountering exceptions, which occur when unexpected conditions such as bad data or broken network connectivity disrupt an application's normal flow. In Python, exceptions are distinct from syntax errors, as they arise from runtime issues rather than code structure violations, and can be handled using built-in error handling frameworks. Python developers can utilize structured exception handling with try-except blocks to catch and manage these exceptions gracefully, preventing program crashes and maintaining data integrity. The article outlines the use of try-except-else-finally constructs to handle specific error types, execute code conditionally, and ensure cleanup tasks are performed regardless of whether an error occurred. Additionally, the use of assertions and custom exceptions is discussed, allowing developers to enforce conditions and communicate errors clearly. Tools like Rollbar can further aid in tracking and managing errors by capturing and analyzing them in real-time, helping developers to improve code robustness and reliability.