Getting total/free RAM from within Python

Question

From within a Python application, how can I get the total amount of RAM of the system and how much of it is currently free, in a cross-platform way?

Ideally, the amount

Answer 1

For the free memory part, there is a function in the wx library:

wx.GetFreeMemory()

Unfortunately, this only works on Windows. Linux and Mac ports either return "-1" or raise a NotImplementedError.