Windows 10 Pro Edition comes with WSL, a Linux subsystem which is pretty decent for my deep learning implementation and small scale test. With Xming, I can do some visualization as well. There will be downsides. If you get a laptop that just comes with Ubuntu or any Linux distro, you are good to go.
If your development is cloud based, Google is push Chrome OS into a Linux friendly direction. Chromebooks are pretty good choices, price-wise, functionality-wise and portability-wise, you name it. At the time of writing (July 20s, 2018), Pixelbook and a few more Chromebooks receive the support of Linux container. More will be supported.