ib-insync

import asyncio from ib_insync import IB, Stock, util async def main(): ib = IB() # Connect to TWS or IB Gateway on default port 7497 (TWS) or 4002 (Gateway) # Ensure TWS/Gateway is running and API settings allow connection (File -> Global Configuration -> API -> Settings). try: await ib.connect('127.0.0.1', 7497, clientId=1) print("Connected to Interactive Brokers API.") # Define a contract (e.g., Apple stock) contract = Stock('AAPL', 'SMART', 'USD') # Qualify the contract to ensure it's valid and get full details # This step is crucial to avoid 'No security definition' errors await ib.qualifyContracts(contract) print(f"Qualified contract: {contract.conId} - {contract.longName}") # Request historical data for the contract # Requires an active market data subscription for 'TRADES' or 'MIDPOINT' bars = await ib.reqHistoricalData( contract, endDateTime='', durationStr='1 D', # Request 1 day of data barSizeSetting='1 min', whatToShow='TRADES', useRTH=True, # Use regular trading hours formatDate=1 # Return datetime objects ) print(f"Received {len(bars)} historical bars for {contract.symbol}.") if bars: print(f"Last bar: Time={bars[-1].date}, Open={bars[-1].open}, Close={bars[-1].close}") except Exception as e: print(f"An error occurred: {e}") finally: if ib.isConnected(): ib.disconnect() print("Disconnected from Interactive Brokers API.") if __name__ == '__main__': asyncio.run(main())