psutil.py

import psutil


def get_total_ram_available_bytes() -> int:
    """Return the total number of bytes available on the platform."""
    return int(psutil.virtual_memory().total)


def get_total_ram_used_bytes() -> int:
    """Return the number of bytes currently used on the platform."""
    return int(psutil.virtual_memory().used)


def get_pid_ram_used_bytes(pid: int) -> int:
    """Return the number of bytes currently used by a given process.
    (Use os.getpid() to get current process ID)"""
    return int(psutil.Process(pid).memory_info().rss)