First check if the bug is reported or not under Issues
If you're unable to find an open issue addressing the problem, open a new one. Be sure to include a title and clear description, as much relevant information as possible, and a code sample or an executable test case demonstrating the expected behavior that is not occurring.
Ensure the PR description clearly describes the problem and solution. Include the relevant issue number if applicable.
We use flake8.
Vietnamese translation is stored in this folder. Feel free to do a PR on this file.