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Developer Builds First Crypto Trading Bot Using Python and Binance API

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A software developer built a cryptocurrency trading bot to automate manual trades on Binance, motivated by missing profitable price moves while distracted by other tasks. The bot uses the ccxt Python library to fetch candlestick data and applies a simple mean-reversion strategy, buying when price drops 2% below its 20-period moving average and selling when it rises 2% above. An initial single-script version failed due to missing position tracking, no error handling, and hard-coded order sizes that were sometimes rejected by the exchange. The developer refactored the code into modular functions, added retry logic for network errors, and introduced a position tracker to prevent unintended over-exposure. The key takeaway was that reliable data fetching, clean order execution, and robust error handling matter more than complex trading algorithms.

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