I led a sprint on 'Braillify,' our Korean-to-Braille conversion library, at PyCon 2025. The sprint space on the 6th floor was quieter than where the main tutorial sessions were held. To be honest, while preparing the sprint, I worried about how many people would actually show up. But once we started, the participants' passion for contributing to open source was hotter than ever. I realized once again that it's not about having many or few people—what matters is the sincerity of those who are there together.

What I struggled with most while preparing this sprint was accessibility. When people hear "open source contribution," many think it's difficult. Especially those without coding experience often don't even attempt it. So this time, I structured it around adding test cases so that even people with no coding experience could participate. The approach was to read the Braille regulation documents and write test cases accordingly. As a result, all participants successfully completed the contribution process. This was truly rewarding.

Of course, not everything was perfect. Some GitHub Actions failed, and new red dots appeared in the test results. But this is actually a positive sign. It means that various transcription rules based on the 2024 revised Korean Braille regulations have been newly added. Rules that weren't previously applied now exist as test cases, and through this, we expect the accuracy of Korean Braille conversion to improve significantly.

Watching the participants was also interesting. At first, they looked bewildered by the extensive Braille regulation documents. Honestly, I had the same reaction when I first saw those documents. But since it was based on Korean, a familiar language, they gradually followed the guide and completed meaningful contributions. Seeing someone feel proud as their added test case went up as a Pull Request made me think that this kind of experience is the true value of open source.

Currently, there are red dots in the test results. These red dots represent rules that haven't been implemented yet. We will continue to work until all tests pass and the red dots turn green, and until all items of the Korean Braille regulations are perfectly implemented. I sincerely thank all the participants who joined us on this journey.