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

psutil would be another good choice. It also needs a library installed however.

>>> import psutil
>>> psutil.virtual_memory()
vmem(total=8374149120L, available=2081050624L, percent=75.1,
     used=8074080256L, free=300068864L, active=3294920704,
     inactive=1361616896, buffers=529895424L, cached=1251086336)