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""" Advanced Python Template """

Imports

import argparse # For command-line argument parsing import logging # For logging from datetime import datetime # For timestamping import requests # Example external library (requires installation via pip)

Configuration

CONFIG = { "version": "2.0", "app_name": "Advanced Python App", "log_file": "app.log", }

Set up logging

logging.basicConfig( filename=CONFIG["log_file"], level=logging.INFO, format="%(asctime)s [%(levelname)s] %(message)s" )

Utility Functions

def greet_user(name): """ Greet the user by name. """ logging.info(f"Greeting user: {name}") print(f"Hello, {name}! Welcome to {CONFIG['app_name']}.")

def perform_task(task_name): """ Perform a specific task based on the task name. """ logging.info(f"Performing task: {task_name}") if task_name == "fetch_data": fetch_data() else: print(f"Task '{task_name}' is not recognized.") logging.warning(f"Unrecognized task: {task_name}")

def fetch_data(): """ Example task: Fetch data from an external API. """ logging.info("Fetching data from an API.") try: response = requests.get("https://jsonplaceholder.typicode.com/posts/1") response.raise_for_status() data = response.json() print(f"Fetched data: {data}") logging.info(f"Data fetched successfully: {data}") except requests.RequestException as e: print(f"Error fetching data: {e}") logging.error(f"Error during API call: {e}")

Argument Parsing

def parse_arguments(): """ Parse command-line arguments. """ parser = argparse.ArgumentParser(description=CONFIG["app_name"]) parser.add_argument( "--name", type=str, default="User", help="Name of the user." ) parser.add_argument( "--task", type=str, default="fetch_data", help="Task to perform." ) return parser.parse_args()

Main Function

def main(): """ Main entry point for the application. """ logging.info(f"Starting {CONFIG['app_name']} (v{CONFIG['version']})") print(f"Starting {CONFIG['app_name']} (v{CONFIG['version']})")

# Parse arguments
args = parse_arguments()

# Greet the user
greet_user(args.name)

# Perform the requested task
perform_task(args.task)

print("Application finished.")
logging.info("Application finished successfully.")

Run the script

if name == "main": try: main() except KeyboardInterrupt: print("\nApplication interrupted by the user.") logging.warning("Application interrupted by user.") sys.exit(0) except Exception as e: print(f"An unexpected error occurred: {e}") logging.error(f"Unexpected error: {e}") sys.exit(1)

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