In my own office I use perhaps a dozen machines. Servers running FreeBSD, OpenBSD, or Linux. Linux, Windows, and Mac desktops and laptops. Few are actually set up as Python development machines (those of course have recent Python installed), but having a ubiquitous tool for simple calculations (or even short scripts) is quite handy on all of the others.
My work might not be typical: I have been programming for over half a century and I started making use of Python for simple programs in the Python 1.2 time frame around 20 years ago. I'm not really a Python developer, but I appreciate it as a useful tool--even as a keyboard driven calculator.