python-purse 1.1.0

Snippets and utils for python projects

python‑purse

python‑purse is a library that collects a variety of snippets and utilities for both asynchronous and synchronous Python projects. Whether you're building bots, web applications, or other tools, this library provides ready-to-use code modules to speed up development.

Framework Extensions

• aiogram: Bots and dp bootstrap, router-makers, useful decorators and utilities for Telegram bots.
• aiohttp: Simplified app creation and server utilities.
• django: ASGI/WSGI handlers, repository patterns, and more for Django projects.

Logging

Custom logging configurations and integrations (including Telegram-based logging).

from configparser import ConfigParser

import purse.logs

config = ConfigParser()
config.read('config.ini')
bot_config = config['bot']

tg_logger = purse.logging.setup(
    telegram_setup=purse.logging.TelegramSetup(
        bot=purse.logging.SimpleLoggingBot(token=bot_config.get('token')),
        log_chat_id=bot_config.get('log_chat_id'),
        send_delay=bot_config.getint('send_delay'),
        logger_level=bot_config.getint('logger_level'),
        service_name=bot_config.get('service_name'),
    ),
)

tg_logger.debug("dev message", to_dev=True)  # prints to stderr and sends message to telegram

try:
    raise Exception("some exception")
except Exception as exc:
    tg_logger.exception(exc)  # prints traceback to stderr and sends message to telegram

from logging import getLogger

your_app_logger = getLogger("app")
your_app_logger.error('error in runtime')  # prints to stderr and sends message to telegram

You don't have to use purse.logging.setup function return object (tg_logger in example above) directly for error/exception telegram logging unless you want to send messages by TelegramLogger.to_tg(...) and TelegramLogger.to_dev(...) methods.

Interfaces and Repositories

Protocol definitions and in-memory repository implementations for fast prototyping and testing.

JSON encoders and decoders

Utility functions and classes to simplify JSON handling (mostly decoding and encoding Decimals, UUIDs, dates, and other specific types).

from purse import json as purse_json
from decimal import Decimal

purse_json.dumps({"val": Decimal("100")})  # '{"val": "100"}'
purse_json.loads('{"val": "100"}')  # {'val': Decimal('100')}

Asyncio signals handling

Easy loop signal setup for SIGINT and SIGTERM. Use predefined purse.signals.prepare_shutdown (internal flag of this event would be set to True when one of signals received) and purse.signals.shutdown_complete events in your code for more compatability.

import purse
import asyncio 

async def main():
  kill_event = purse.signals.setup()
  ... # some startup logic
  
  await kill_event.wait()
  ... # some shutdown logic
  await purse.signals.shutdown_complete.wait()
  

if __name__ == '__main__':
    asyncio.run(main())

You can pass your custom function to purse.signals.setup for handling signals. This function must have exact two arguments: signal.Signals and asyncio.Event (internal flag of this event you must set to True due the function execution).

Installation

You can install python-purse via pip (or with your another favorite manager) from PyPi:

pip install python-purse

Contributing

Contributions are welcome! If you’d like to contribute, please follow these steps:

1. Fork the repository.
2. Create a new branch (git checkout -b feature/my-feature).
3. Commit your changes (git commit -am 'Add new feature').
4. Push your branch (git push origin feature/my-feature).
5. Open a pull request.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Contacts

email

telegram