Google-IT-Automation-with-Python

```python
import logging
from gvoice import GVSession
from datetime import datetime
import time

# Configure logging
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

# Google Voice credentials (replace with placeholders)
USERNAME = '[email protected]'
PASSWORD = 'your_password'

# List of phone numbers to notify (in E.164 format)
PHONE_NUMBERS = [
    '+12345678901',
    '+19876543210',
    '+15551234567',
    '+15559876543',
    '+15554567890'
]

# Message template
MESSAGE_TEMPLATE = "Hello {name}, this is an automated notification from [COMPANY_NAME]. Your appointment is scheduled for {date} at {time}."

# Sample appointment data
APPOINTMENTS = {
    '+12345678901': {'name': 'Alice Johnson', 'date': '2024-05-15', 'time': '14:30'},
    '+19876543210': {'name': 'Bob Smith', 'date': '2024-05-16', 'time': '10:00'},
    '+15551234567': {'name': 'Carol Davis', 'date': '2024-05-17', 'time': '16:45'},
    '+15559876543': {'name': 'David Wilson', 'date': '2024-05-18', 'time': '09:15'},
    '+15554567890': {'name': 'Eve Brown', 'date': '2024-05-19', 'time': '11:30'}
}

def authenticate_gvoice():
    """Authenticate with Google Voice using provided credentials."""
    try:
        session = GVSession()
        session.login(USERNAME, PASSWORD)
        logger.info("Successfully authenticated with Google Voice")
        return session
    except Exception as e:
        logger.error(f"Authentication failed: {str(e)}")
        raise

def send_sms(session, phone_number, message):
    """Send an SMS using Google Voice."""
    try:
        session.send_sms(phone_number, message)
        logger.info(f"SMS sent to {phone_number}")
        time.sleep(1)  # Rate limiting
    except Exception as e:
        logger.error(f"Failed to send SMS to {phone_number}: {str(e)}")
        raise

def main():
    """Main function to automate SMS notifications."""
    try:
        session = authenticate_gvoice()
        
        for number in PHONE_NUMBERS:
            if number in APPOINTMENTS:
                appointment = APPOINTMENTS[number]
                message = MESSAGE_TEMPLATE.format(
                    name=appointment['name'],
                    date=appointment['date'],
                    time=appointment['time']
                )
                send_sms(session, number, message)
            else:
                logger.warning(f"No appointment data for {number}")
        
        logger.info("SMS notification process completed successfully")
    except Exception as e:
        logger.error(f"Script failed: {str(e)}")
        return 1
    
    return 0

if __name__ == "__main__":
    exit(main())
```

### Key Features of the Script:
1. **Authentication**: Securely logs into Google Voice using your credentials.
2. **Rate Limiting**: Includes a 1-second delay between SMS sends to avoid hitting API limits.
3. **Error Handling**: Logs failures for individual numbers without stopping the entire process.
4. **Customization**: Uses a template for personalized messages based on appointment data.
5. **Logging**: Provides detailed logs for debugging and monitoring.

### Example Output Log:
```
2024-05-14 10:15:23,456 - INFO - Successfully authenticated with Google Voice
2024-05-14 10:15:24,789 - INFO - SMS sent to +12345678901
2024-05-14 10:15:25,890 - INFO - SMS sent to +19876543210
2024-05-14 10:15:27,123 - WARNING - No appointment data for +15551234567
2024-05-14 10:15:28,456 - INFO - SMS sent to +15559876543
2024-05-14 10:15:29,789 - INFO - SMS sent to +15554567890
2024-05-14 10:15:31,012 - INFO - SMS notification process completed successfully
```