how-to-get-market-cap-from-CoinGecko-without-API

A lightweight Python script that fetches cryptocurrency market capitalization data from CoinGecko’s public API. Designed for easy integration, full debugging, and open-source contributions.

Features

• Retrieve a full list of coins from CoinGecko
• Look up a coin’s ID by its symbol
• Fetch USD market capitalization for any supported symbol
• Detailed logging at HTTP, library, and application levels
• Async-friendly entrypoint for seamless workflow integration

Prerequisites

• Python 3.8 or newer
• Internet access

Installation

1. Clone the repository

   git clone https://github.com/yourusername/how-to-get-market-cap-from-CoinGecko-without-API.git
   cd how-to-get-market-cap-from-CoinGecko-without-API

2. Create and activate a virtual environment (optional but recommended)

   python3 -m venv venv
   source venv/bin/activate   # On Windows use `venv\Scripts\activate`

3. Install dependencies

   pip install -r requirements.txt

requirements.txt should include:

requests>=2.25.0
telethon>=1.24.0   # optional: for Telegram integration

Usage

1. Import and call the async function

   import asyncio
   from marketcap_retriever import marketcap_retrieve_operations
   
   async def main():
       # Use format "<symbol>_anytag", e.g. "btc_demo"
       await marketcap_retrieve_operations("eth_demo")
   
   asyncio.run(main())

2. Output

   • Script logs the USD market cap for the given symbol.

   • Example log:

     INFO:__main__:Market cap of ETH from CoinGecko: 183456789012.34 USD
     

Configuration

• Logging Levels

  • Default: DEBUG for full visibility.
  • Adjust in logging.basicConfig(level=logging.DEBUG).

• Rate Limits

  • CoinGecko public API allows up to 50 calls/minute.
  • Implement caching or delays for high-frequency calls.

Function Reference

Function	Description
get_coingecko_coin_list()	Fetches full coin list (ID, symbol, name) from CoinGecko.
get_market_cap_from_coingecko(symbol, list)	Finds coin ID by symbol and retrieves its USD market cap.
marketcap_retrieve_operations(ticker)	Async entrypoint: splits ticker, retrieves list, fetches cap.

Logging

• Uses Python’s logging module at DEBUG level.
• HTTP debug via http.client.debuglevel = 1.
• Third-party libs (requests, urllib3, telethon) set to DEBUG.

Contributing

1. Fork the repo
2. Create a branch: git checkout -b feature/my-feature
3. Commit changes: git commit -m "Add my feature"
4. Push: git push origin feature/my-feature
5. Open a Pull Request

Please follow PEP 8 and include tests for new functionality.

License

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