def virtual_memory():
    total, free, buffers, shared, _, _ = _psutil_linux.get_sysinfo()
    cached = active = inactive = None
    f = open('/proc/meminfo', 'r')
    try:
        for line in f:
            if line.startswith('Cached:'):
                cached = int(line.split()[1]) * 1024
            elif line.startswith('Active:'):
                active = int(line.split()[1]) * 1024
            elif line.startswith('Inactive:'):
                inactive = int(line.split()[1]) * 1024
            if cached is not None \
            and active is not None \
            and inactive is not None:
                break
        else:
            raise RuntimeError("line(s) not found")
    finally:
        f.close()
    avail = free + buffers + cached
    used = total - free
    percent = usage_percent((total - avail), total, _round=1)
    return nt_virtmem_info(total, avail, percent, used, free,
                           active, inactive, buffers, cached)
dataset/ETHPy150Open packages/psutil/psutil/_pslinux.py/virtual_memory/original