Also: use “from __future__ import print_function” to start experimenting with that in older 2.x code. I have found the “bytearray” type (available in both 2.x

Also: use “from __future__ import print_function” to start experimenting with that in older 2.x code. I have found the “bytearray” type (available in both 2.x and 3.x) can be a good way to write mostly the same code for both versions that can start to transition to raw bytes where needed.