How to Get Hardware and System Information in Python

Abdou Rockikz · 21 aug 2019

Abdou Rockikz · 5 min read · Updated oct 2019 · General Python Topics

In this tutorial, you will learn how to get all system and hardware information in Python code.

As a Python developer, it is handy to use third-party libraries that does the job you actually want, instead of reinventing the wheel each time. In this tutorial, you will be familiar with psutil which is cross-platform library for process and system monitoring in Python, as well as builtin platform module.

Here is the table of content of this tutorial:

  1. System Information
  2. CPU Information
  3. Memory Usage
  4. Disk Usage
  5. Network Information

Before we dive in, you need to install psutil:

pip3 install psutil

Open up a new python file and let's get started, importing necessary modules:

import psutil
import platform
from datetime import datetime

Let's make a function that converts large number of bytes into a scaled format ( e.g in kilo, mega, giga, etc. ):

def get_size(bytes, suffix="B"):
    """
    Scale bytes to its proper format
    e.g:
        1253656 => '1.20MB'
        1253656678 => '1.17GB'
    """
    factor = 1024
    for unit in ["", "K", "M", "G", "T", "P"]:
        if bytes < factor:
            return f"{bytes:.2f}{unit}{suffix}"
        bytes /= factor

System Information

We gonna need platform module here:

print("="*40, "System Information", "="*40)
uname = platform.uname()
print(f"System: {uname.system}")
print(f"Node Name: {uname.node}")
print(f"Release: {uname.release}")
print(f"Version: {uname.version}")
print(f"Machine: {uname.machine}")
print(f"Processor: {uname.processor}")

Getting the date and time the computer was booted:

# Boot Time
print("="*40, "Boot Time", "="*40)
boot_time_timestamp = psutil.boot_time()
bt = datetime.fromtimestamp(boot_time_timestamp)
print(f"Boot Time: {bt.year}/{bt.month}/{bt.day} {bt.hour}:{bt.minute}:{bt.second}")

CPU Information

# let's print CPU information
print("="*40, "CPU Info", "="*40)
# number of cores
print("Physical cores:", psutil.cpu_count(logical=False))
print("Total cores:", psutil.cpu_count(logical=True))
# CPU frequencies
cpufreq = psutil.cpu_freq()
print(f"Max Frequency: {cpufreq.max:.2f}Mhz")
print(f"Min Frequency: {cpufreq.min:.2f}Mhz")
print(f"Current Frequency: {cpufreq.current:.2f}Mhz")
# CPU usage
print("CPU Usage Per Core:")
for i, percentage in enumerate(psutil.cpu_percent(percpu=True)):
    print(f"Core {i}: {percentage}%")
print(f"Total CPU Usage: {psutil.cpu_percent()}%")

Memory Usage

# Memory Information
print("="*40, "Memory Information", "="*40)
# get the memory details
svmem = psutil.virtual_memory()
print(f"Total: {get_size(svmem.total)}")
print(f"Available: {get_size(svmem.available)}")
print(f"Used: {get_size(svmem.used)}")
print(f"Percentage: {svmem.percent}%")
print("="*20, "SWAP", "="*20)
# get the swap memory details (if exists)
swap = psutil.swap_memory()
print(f"Total: {get_size(swap.total)}")
print(f"Free: {get_size(swap.free)}")
print(f"Used: {get_size(swap.used)}")
print(f"Percentage: {swap.percent}%")

Disk Usage

# Disk Information
print("="*40, "Disk Information", "="*40)
print("Partitions and Usage:")
# get all disk partitions
partitions = psutil.disk_partitions()
for partition in partitions:
    print(f"=== Device: {partition.device} ===")
    print(f"  Mountpoint: {partition.mountpoint}")
    print(f"  File system type: {partition.fstype}")
    try:
        partition_usage = psutil.disk_usage(partition.mountpoint)
    except PermissionError:
        # this can be catched due to the disk that
        # isn't ready
        continue
    print(f"  Total Size: {get_size(partition_usage.total)}")
    print(f"  Used: {get_size(partition_usage.used)}")
    print(f"  Free: {get_size(partition_usage.free)}")
    print(f"  Percentage: {partition_usage.percent}%")
# get IO statistics since boot
disk_io = psutil.disk_io_counters()
print(f"Total read: {get_size(disk_io.read_bytes)}")
print(f"Total write: {get_size(disk_io.write_bytes)}")

Network Information

# Network information
print("="*40, "Network Information", "="*40)
# get all network interfaces (virtual and physical)
if_addrs = psutil.net_if_addrs()
for interface_name, interface_addresses in if_addrs.items():
    for address in interface_addresses:
        print(f"=== Interface: {interface_name} ===")
        if str(address.family) == 'AddressFamily.AF_INET':
            print(f"  IP Address: {address.address}")
            print(f"  Netmask: {address.netmask}")
            print(f"  Broadcast IP: {address.broadcast}")
        elif str(address.family) == 'AddressFamily.AF_PACKET':
            print(f"  MAC Address: {address.address}")
            print(f"  Netmask: {address.netmask}")
            print(f"  Broadcast MAC: {address.broadcast}")
# get IO statistics since boot
net_io = psutil.net_io_counters()
print(f"Total Bytes Sent: {get_size(net_io.bytes_sent)}")
print(f"Total Bytes Received: {get_size(net_io.bytes_recv)}")

Alright, here is a result output of my personal linux machine:

======================================== System Information ========================================
System: Linux
Node Name: rockikz
Release: 4.17.0-kali1-amd64
Version: #1 SMP Debian 4.17.8-1kali1 (2018-07-24)
Machine: x86_64
Processor:
======================================== Boot Time ========================================
Boot Time: 2019/8/21 9:37:26
======================================== CPU Info ========================================
Physical cores: 4
Total cores: 4
Max Frequency: 3500.00Mhz
Min Frequency: 1600.00Mhz
Current Frequency: 1661.76Mhz
CPU Usage Per Core:
Core 0: 0.0%
Core 1: 0.0%
Core 2: 11.1%
Core 3: 0.0%
Total CPU Usage: 3.0%
======================================== Memory Information ========================================
Total: 3.82GB
Available: 2.98GB
Used: 564.29MB
Percentage: 21.9%
==================== SWAP ====================
Total: 0.00B
Free: 0.00B
Used: 0.00B
Percentage: 0%
======================================== Disk Information ========================================
Partitions and Usage:
=== Device: /dev/sda1 ===
  Mountpoint: /
  File system type: ext4
  Total Size: 451.57GB
  Used: 384.29GB
  Free: 44.28GB
  Percentage: 89.7%
Total read: 2.38GB
Total write: 2.45GB
======================================== Network Information ========================================
=== Interface: lo ===
  IP Address: 127.0.0.1
  Netmask: 255.0.0.0
  Broadcast IP: None
=== Interface: lo ===
=== Interface: lo ===
  MAC Address: 00:00:00:00:00:00
  Netmask: None
  Broadcast MAC: None
=== Interface: wlan0 ===
  IP Address: 192.168.1.101
  Netmask: 255.255.255.0
  Broadcast IP: 192.168.1.255
=== Interface: wlan0 ===
=== Interface: wlan0 ===
  MAC Address: 64:70:02:07:40:50
  Netmask: None
  Broadcast MAC: ff:ff:ff:ff:ff:ff
=== Interface: eth0 ===
  MAC Address: d0:27:88:c6:06:47
  Netmask: None
  Broadcast MAC: ff:ff:ff:ff:ff:ff
Total Bytes Sent: 123.68MB
Total Bytes Received: 577.94MB

If you are using a laptop, you can use psutil.sensors_battery() to get battery information.

Also, if you are a linux user, you can use psutil.sensors_fan() to get fan's RPM ( Revolutions Per Minute ) and also psutil.sensors_temperatures() to get various devices' temperature.

You can also use psutil to monitor operating system processes, such as CPU and memory usage of each process, etc.

Great, now you can integrate these information on your Python monitor applications and utilities ! Good luck!

Happy Coding ♥

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