Automate Saving the Planet… Or Just Your Computer’s Energy

I came across @oliverbennet is post “What’s a Quickie Post?” and couldn’t resist giving it a try Quickie Post myself. So, here’s a Python twist on a global problem:

Problem: Fighting climate change is a serious challenge, but did you know Python is playing a role in it?

Imagine you’re writing code on Python to help reduce energy waste:

<span>import</span> <span>os</span>
<span>def</span> <span>save_energy</span><span>():</span>
    <span>if</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>nt</span><span>"</span><span>:</span>  <span># Windows </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>shutdown /s /t 1</span><span>"</span><span>)</span>
    <span>elif</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>posix</span><span>"</span><span>:</span>  <span># macOS/Linux </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>pmset sleepnow</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>Unsupported OS! </span><span>"</span><span>)</span>
    <span>print</span><span>(</span><span>"</span><span>Computer shutting down to save energy! </span><span>"</span><span>)</span>
<span># Save the planet </span><span>save_energy</span><span>()</span>
<span>import</span> <span>os</span>

<span>def</span> <span>save_energy</span><span>():</span>
    <span>if</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>nt</span><span>"</span><span>:</span>  <span># Windows </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>shutdown /s /t 1</span><span>"</span><span>)</span>
    <span>elif</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>posix</span><span>"</span><span>:</span>  <span># macOS/Linux </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>pmset sleepnow</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>Unsupported OS! </span><span>"</span><span>)</span>
    <span>print</span><span>(</span><span>"</span><span>Computer shutting down to save energy! </span><span>"</span><span>)</span>

<span># Save the planet </span><span>save_energy</span><span>()</span>
import os

def save_energy():
    if os.name == "nt":  # Windows         os.system("shutdown /s /t 1")
    elif os.name == "posix":  # macOS/Linux         os.system("pmset sleepnow")
    else:
        print("Unsupported OS! ")
    print("Computer shutting down to save energy! ")

# Save the planet save_energy()

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Great, let’s try something more sophisticated. We’re all aware that high CPU or GPU usage translates to more energy consumption. So, this Python script uses APScheduler to periodically check system load, and if it’s too high, it shuts down or puts the computer to sleep.

<span>import</span> <span>os</span>
<span>import</span> <span>psutil</span>  <span># For monitoring CPU usage </span><span>import</span> <span>GPUtil</span>  <span># For monitoring GPU usage </span><span>from</span> <span>apscheduler.schedulers.blocking</span> <span>import</span> <span>BlockingScheduler</span>
<span>def</span> <span>save_energy</span><span>():</span>
    <span>"""</span><span>Shutdown or put the system to sleep if CPU or GPU load is too high.</span><span>"""</span>
    <span>print</span><span>(</span><span>"</span><span>Energy-saving monitor started! </span><span>"</span><span>)</span>
    <span>if</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>nt</span><span>"</span><span>:</span>  <span># Windows </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>shutdown /s /t 1</span><span>"</span><span>)</span>
    <span>elif</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>posix</span><span>"</span><span>:</span>  <span># macOS/Linux </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>pmset sleepnow</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>Unsupported OS! </span><span>"</span><span>)</span>
    <span>print</span><span>(</span><span>"</span><span>Computer shutting down to save energy! </span><span>"</span><span>)</span>
<span>def</span> <span>check_system_load</span><span>():</span>
    <span>"""</span><span>Check CPU and GPU load and trigger save_energy if either is too high.</span><span>"""</span>
    <span># Check CPU load </span>    <span>cpu_load</span> <span>=</span> <span>psutil</span><span>.</span><span>cpu_percent</span><span>(</span><span>interval</span><span>=</span><span>1</span><span>)</span>
    <span>print</span><span>(</span><span>f</span><span>"</span><span>Current CPU Load: </span><span>{</span><span>cpu_load</span><span>}</span><span>%</span><span>"</span><span>)</span>
    <span># Check GPU load </span>    <span>gpus</span> <span>=</span> <span>GPUtil</span><span>.</span><span>getGPUs</span><span>()</span>
    <span>if</span> <span>gpus</span><span>:</span>
        <span>gpu_load</span> <span>=</span> <span>max</span><span>(</span><span>gpu</span><span>.</span><span>load</span> <span>*</span> <span>100</span> <span>for</span> <span>gpu</span> <span>in</span> <span>gpus</span><span>)</span>  <span># Get max load of all GPUs </span>        <span>print</span><span>(</span><span>f</span><span>"</span><span>Current GPU Load: </span><span>{</span><span>gpu_load</span><span>}</span><span>%</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>gpu_load</span> <span>=</span> <span>0</span>
        <span>print</span><span>(</span><span>"</span><span>No GPUs detected.</span><span>"</span><span>)</span>
    <span># Trigger energy-saving if CPU or GPU load is too high </span>    <span>if</span> <span>cpu_load</span> <span>></span> <span>90</span> <span>or</span> <span>gpu_load</span> <span>></span> <span>90</span><span>:</span>  <span># Adjust thresholds as needed </span>        <span>print</span><span>(</span><span>"</span><span>High system load detected! Initiating energy-saving protocol... </span><span>"</span><span>)</span>
        <span>save_energy</span><span>()</span>
<span># Set up the scheduler </span><span>scheduler</span> <span>=</span> <span>BlockingScheduler</span><span>()</span>
<span>scheduler</span><span>.</span><span>add_job</span><span>(</span><span>check_system_load</span><span>,</span> <span>'</span><span>interval</span><span>'</span><span>,</span> <span>minutes</span><span>=</span><span>1</span><span>)</span>  <span># Check every minute </span>
<span>import</span> <span>os</span>
<span>import</span> <span>psutil</span>  <span># For monitoring CPU usage </span><span>import</span> <span>GPUtil</span>  <span># For monitoring GPU usage </span><span>from</span> <span>apscheduler.schedulers.blocking</span> <span>import</span> <span>BlockingScheduler</span>

<span>def</span> <span>save_energy</span><span>():</span>
    <span>"""</span><span>Shutdown or put the system to sleep if CPU or GPU load is too high.</span><span>"""</span>
    <span>print</span><span>(</span><span>"</span><span>Energy-saving monitor started! </span><span>"</span><span>)</span>
    <span>if</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>nt</span><span>"</span><span>:</span>  <span># Windows </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>shutdown /s /t 1</span><span>"</span><span>)</span>
    <span>elif</span> <span>os</span><span>.</span><span>name</span> <span>==</span> <span>"</span><span>posix</span><span>"</span><span>:</span>  <span># macOS/Linux </span>        <span>os</span><span>.</span><span>system</span><span>(</span><span>"</span><span>pmset sleepnow</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>print</span><span>(</span><span>"</span><span>Unsupported OS! </span><span>"</span><span>)</span>
    <span>print</span><span>(</span><span>"</span><span>Computer shutting down to save energy! </span><span>"</span><span>)</span>

<span>def</span> <span>check_system_load</span><span>():</span>
    <span>"""</span><span>Check CPU and GPU load and trigger save_energy if either is too high.</span><span>"""</span>
    <span># Check CPU load </span>    <span>cpu_load</span> <span>=</span> <span>psutil</span><span>.</span><span>cpu_percent</span><span>(</span><span>interval</span><span>=</span><span>1</span><span>)</span>
    <span>print</span><span>(</span><span>f</span><span>"</span><span>Current CPU Load: </span><span>{</span><span>cpu_load</span><span>}</span><span>%</span><span>"</span><span>)</span>

    <span># Check GPU load </span>    <span>gpus</span> <span>=</span> <span>GPUtil</span><span>.</span><span>getGPUs</span><span>()</span>
    <span>if</span> <span>gpus</span><span>:</span>
        <span>gpu_load</span> <span>=</span> <span>max</span><span>(</span><span>gpu</span><span>.</span><span>load</span> <span>*</span> <span>100</span> <span>for</span> <span>gpu</span> <span>in</span> <span>gpus</span><span>)</span>  <span># Get max load of all GPUs </span>        <span>print</span><span>(</span><span>f</span><span>"</span><span>Current GPU Load: </span><span>{</span><span>gpu_load</span><span>}</span><span>%</span><span>"</span><span>)</span>
    <span>else</span><span>:</span>
        <span>gpu_load</span> <span>=</span> <span>0</span>
        <span>print</span><span>(</span><span>"</span><span>No GPUs detected.</span><span>"</span><span>)</span>

    <span># Trigger energy-saving if CPU or GPU load is too high </span>    <span>if</span> <span>cpu_load</span> <span>></span> <span>90</span> <span>or</span> <span>gpu_load</span> <span>></span> <span>90</span><span>:</span>  <span># Adjust thresholds as needed </span>        <span>print</span><span>(</span><span>"</span><span>High system load detected! Initiating energy-saving protocol... </span><span>"</span><span>)</span>
        <span>save_energy</span><span>()</span>

<span># Set up the scheduler </span><span>scheduler</span> <span>=</span> <span>BlockingScheduler</span><span>()</span>
<span>scheduler</span><span>.</span><span>add_job</span><span>(</span><span>check_system_load</span><span>,</span> <span>'</span><span>interval</span><span>'</span><span>,</span> <span>minutes</span><span>=</span><span>1</span><span>)</span>  <span># Check every minute </span>
import os
import psutil  # For monitoring CPU usage import GPUtil  # For monitoring GPU usage from apscheduler.schedulers.blocking import BlockingScheduler

def save_energy():
    """Shutdown or put the system to sleep if CPU or GPU load is too high."""
    print("Energy-saving monitor started! ")
    if os.name == "nt":  # Windows         os.system("shutdown /s /t 1")
    elif os.name == "posix":  # macOS/Linux         os.system("pmset sleepnow")
    else:
        print("Unsupported OS! ")
    print("Computer shutting down to save energy! ")

def check_system_load():
    """Check CPU and GPU load and trigger save_energy if either is too high."""
    # Check CPU load     cpu_load = psutil.cpu_percent(interval=1)
    print(f"Current CPU Load: {cpu_load}%")

    # Check GPU load     gpus = GPUtil.getGPUs()
    if gpus:
        gpu_load = max(gpu.load * 100 for gpu in gpus)  # Get max load of all GPUs         print(f"Current GPU Load: {gpu_load}%")
    else:
        gpu_load = 0
        print("No GPUs detected.")

    # Trigger energy-saving if CPU or GPU load is too high     if cpu_load > 90 or gpu_load > 90:  # Adjust thresholds as needed         print("High system load detected! Initiating energy-saving protocol... ")
        save_energy()

# Set up the scheduler scheduler = BlockingScheduler()
scheduler.add_job(check_system_load, 'interval', minutes=1)  # Check every minute 

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How can we save the planet in other programming languages? Let’s discuss!

原文链接：Automate Saving the Planet… Or Just Your Computer’s Energy