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 of free RAM should consider only physical memory that can actually be allocated to the Python process.

Answer 1

Have you tried SIGAR - System Information Gatherer And Reporter? After install

import os, sigar

sg = sigar.open()
mem = sg.mem()
sg.close() 
print mem.total() / 1024, mem.free() / 1024

Hope this helps