There's a few things going on here that need teasing out

• Naming: "Major" version of 3.13 as being 13 vs. being 3
• Duplication of code: src\usethis_integrations\sonarqube\config.py vs. src\usethis_integrations\python\version.py
• Methodology: Regex-validated vs. naive str parsing
• Source: Current interpreter vs. .python-version file (if available).
• Hard-coding of f"3.{x}" and only passing around an int, vs. a dedicated object or string