On non-windows systems, a bytes version of `os.environ` is available: `os.envionb` (and `os.getenvb`). See discussion in https://github.com/IronLanguages/ironpython3/pull/545#issuecomment-464995542
On non-windows systems, a bytes version of
os.environis available:os.envionb(andos.getenvb).See discussion in #545 (comment)