[throwaway894345]

Please predates Bazel IIRC. It just didn’t gain as much traction. Please seems considerably easier to operate, but it doesn’t enjoy Bazel’s rigorous usage (although I’ve only encountered bugs when trying to use Bazel to build Python 3 projects).

[thundergolfer]

Bazel’s Python integration quality is a level down from its Java, Go, and C++ integrations. It’s getting better though.