Plaso is a tool set for compiling python projects into DLL(for win is .dll & for linux is .so file) so that the compiled files can be called without python everimont by any language and do not with python environment.
We know there are some tools or modules can do the same work, for example like cython can complie a python project into a dll, but that out file do not can be call when we have none python environment on my operating system.