Python programs introduced in this blog are tested with Python 3.6 . Although most of those should run with Python 2.7 with minor modification, there is not much reason to use v2.7 any more. GUI is based on wxPython v.4 (a.k.a wxPython Phoenix). Other frequently used packages are: numpy and scpiy for mathematical data processing matploltlib for data plotting PIL and OpenCv for image processing sounddevice, soundfile, pyserial, etc. 32bit vs. 64bit Most of the Linux distributions include Python as a standard component, frequently both v2.7 and v3.x. And 32bit applications are quite rare these days. Thus you are not likely to have compatibility issue when installing a new package. In Windows, things are a bit more complicated. Still large percentage of programs are released in 32bit architecture. This is particularly true in engineering software. Thus it is still highly recommended to install 32bit version of Python if your have any chance to inte...