Windowsで起動時にPythonを自動実行する方法と実践例10選

# auto_start.py
import datetime

current_time = datetime.datetime.now()
with open("log.txt", "a") as f:
    f.write(f"スクリプトが実行されました: {current_time}\n")

# advanced_auto_start.py
import datetime
import psutil
import smtplib
from email.mime.text import MIMEText

def check_system_resources():
    cpu_percent = psutil.cpu_percent()
    memory_percent = psutil.virtual_memory().percent
    disk_percent = psutil.disk_usage('/').percent
    return cpu_percent, memory_percent, disk_percent

def send_email(subject, body):
    sender = "your_email@example.com"
    recipient = "admin@example.com"
    password = "your_email_password"

    msg = MIMEText(body)
    msg['Subject'] = subject
    msg['From'] = sender
    msg['To'] = recipient

    with smtplib.SMTP_SSL('smtp.gmail.com', 465) as server:
        server.login(sender, password)
        server.send_message(msg)

if __name__ == "__main__":
    cpu, memory, disk = check_system_resources()
    current_time = datetime.datetime.now()

    log_message = f"システムチェック実行時刻: {current_time}\n"
    log_message += f"CPU使用率: {cpu}%\n"
    log_message += f"メモリ使用率: {memory}%\n"
    log_message += f"ディスク使用率: {disk}%\n"

    with open("system_log.txt", "a") as f:
        f.write(log_message)

    if cpu > 80 or memory > 80 or disk > 80:
        send_email("システムリソース警告", log_message)

# system_log.txt の内容
システムチェック実行時刻: 2024-08-06 09:00:01.123456
CPU使用率: 45%
メモリ使用率: 60%
ディスク使用率: 75%

import os
import sys

def set_environment_variable(var_name, var_value):
    os.environ[var_name] = var_value
    print(f"環境変数 {var_name} を {var_value} に設定しました。")

def get_environment_variable(var_name):
    return os.environ.get(var_name, "未設定")

def main():
    set_environment_variable("PYTHON_HOME", sys.prefix)
    set_environment_variable("PYTHON_SCRIPTS", os.path.join(sys.prefix, "Scripts"))

    print("\n現在の環境変数:")
    print(f"PYTHON_HOME: {get_environment_variable('PYTHON_HOME')}")
    print(f"PYTHON_SCRIPTS: {get_environment_variable('PYTHON_SCRIPTS')}")
    print(f"PATH: {get_environment_variable('PATH')}")

if __name__ == "__main__":
    main()

環境変数 PYTHON_HOME を C:\Users\YourUsername\AppData\Local\Programs\Python\Python39 に設定しました。
環境変数 PYTHON_SCRIPTS を C:\Users\YourUsername\AppData\Local\Programs\Python\Python39\Scripts に設定しました。

現在の環境変数:
PYTHON_HOME: C:\Users\YourUsername\AppData\Local\Programs\Python\Python39
PYTHON_SCRIPTS: C:\Users\YourUsername\AppData\Local\Programs\Python\Python39\Scripts
PATH: C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Users\YourUsername\AppData\Local\Programs\Python\Python39\Scripts;C:\Users\YourUsername\AppData\Local\Programs\Python\Python39;

import logging
import sys

logging.basicConfig(filename='script_log.txt', level=logging.DEBUG, 
                    format='%(asctime)s - %(levelname)s - %(message)s')

def main():
    try:
        # メインの処理をここに記述
        logging.info('スクリプトが正常に実行されました。')
    except Exception as e:
        logging.error(f'エラーが発生しました: {str(e)}', exc_info=True)

if __name__ == "__main__":
    logging.info('スクリプトを開始します。')
    main()
    logging.info('スクリプトを終了します。')

import os
import shutil
import datetime
import logging

logging.basicConfig(filename='backup_log.txt', level=logging.INFO,
                    format='%(asctime)s - %(levelname)s - %(message)s')

def create_backup(source_dir, backup_dir):
    timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
    backup_path = os.path.join(backup_dir, f"backup_{timestamp}")

    try:
        shutil.copytree(source_dir, backup_path)
        logging.info(f"バックアップが成功しました: {backup_path}")
    except Exception as e:
        logging.error(f"バックアップ中にエラーが発生しました: {str(e)}")

if __name__ == "__main__":
    source_directory = "C:\\ImportantData"
    backup_directory = "D:\\Backups"

    create_backup(source_directory, backup_directory)

import requests
from bs4 import BeautifulSoup
import csv
from datetime import datetime

def scrape_website(url):
    response = requests.get(url)
    soup = BeautifulSoup(response.text, 'html.parser')

    # ここでスクレイピングのロジックを実装
    # 例: すべての<h2>タグのテキストを取得
    titles = [h2.text for h2 in soup.find_all('h2')]

    return titles

def save_to_csv(data, filename):
    with open(filename, 'a', newline='', encoding='utf-8') as file:
        writer = csv.writer(file)
        for item in data:
            writer.writerow([datetime.now(), item])

if __name__ == "__main__":
    url = "https://example.com"
    filename = "scraped_data.csv"

    scraped_data = scrape_website(url)
    save_to_csv(scraped_data, filename)

    print(f"{len(scraped_data)}件のデータを{filename}に保存しました。")

import psutil
import smtplib
from email.mime.text import MIMEText
import time

def check_system_resources():
    cpu_percent = psutil.cpu_percent()
    memory_percent = psutil.virtual_memory().percent
    disk_percent = psutil.disk_usage('/').percent

    return cpu_percent, memory_percent, disk_percent

def send_alert(message):
    sender = "your_email@example.com"
    recipient = "admin@example.com"
    password = "your_email_password"

    msg = MIMEText(message)
    msg['Subject'] = "システムリソース警告"
    msg['From'] = sender
    msg['To'] = recipient

    with smtplib.SMTP_SSL('smtp.gmail.com', 465) as server:
        server.login(sender, password)
        server.send_message(msg)

def monitor_system():
    while True:
        cpu, memory, disk = check_system_resources()

        if cpu > 90 or memory > 90 or disk > 90:
            alert_message = f"警告: システムリソースが高負荷状態です。\n"
            alert_message += f"CPU: {cpu}%\n"
            alert_message += f"メモリ: {memory}%\n"
            alert_message += f"ディスク: {disk}%\n"

            send_alert(alert_message)
            print(alert_message)

        time.sleep(300)  # 5分ごとにチェック

if __name__ == "__main__":
    print("システムモニタリングを開始します...")
    monitor_system()

import Adafruit_DHT
import RPi.GPIO as GPIO
import time

SENSOR = Adafruit_DHT.DHT22
PIN = 4
RELAY_PIN = 17

GPIO.setmode(GPIO.BCM)
GPIO.setup(RELAY_PIN, GPIO.OUT)

def read_temperature():
    humidity, temperature = Adafruit_DHT.read_retry(SENSOR, PIN)
    if temperature is not None:
        return round(temperature, 1)
    else:
        return None

def control_ac(state):
    GPIO.output(RELAY_PIN, state)

def monitor_temperature():
    while True:
        temp = read_temperature()
        if temp is not None:
            print(f"現在の温度: {temp}°C")
            if temp > 28:
                print("エアコンをONにします")
                control_ac(GPIO.HIGH)
            elif temp < 24:
                print("エアコンをOFFにします")
                control_ac(GPIO.LOW)
        else:
            print("温度の読み取りに失敗しました")

        time.sleep(300)  # 5分ごとにチェック

if __name__ == "__main__":
    try:
        print("温度モニタリングを開始します...")
        monitor_temperature()
    except KeyboardInterrupt:
        print("プログラムを終了します")
    finally:
        GPIO.cleanup()