My Python tests passed. Production still broke.

1. 1Write unit tests to cover edge cases like Unicode characters in input data
2. 2Use libraries like Python's `unittest` and `re` to test and validate regex patterns
3. 3Test your code with sample data that includes Unicode characters to catch potential issues
4. 4Configure your testing environment to mimic production data and scenarios
5. 5Review and update your regex patterns to handle Unicode characters correctly

Developers and QA engineers can benefit from this lesson to ensure their code is robust and handles unexpected input

💡 Edge cases like Unicode characters can break your code even if unit tests pass, so it's essential to test for them

🚨 Unit tests passed, production crashed! 🤦‍♂️ Don't forget to test for edge cases like Unicode characters in your input data 📝