To be fair, that may be a python problem, as I've also had issues with 2 & 3 on a Linux machine as well. At this point, unless I can avoid it I just use a VM for any python 2 work.
OSX comes with some software such as git and python2 preinstalled. However they do not usually keep that software up to date and there is no way for you to change that, which means that community package managers need to be used to install more up to date software versions in parallel to the system ones
