import yfinance as yf
import sys

def check_ticker(symbol):
    print(f"--- Checking {symbol} ---")
    try:
        t = yf.Ticker(symbol)
        
        # Check fast_info
        print("Fetching fast_info...")
        fi = t.fast_info
        # fast_info is a LazyLoader, accessing keys helps trigger load
        keys = list(fi.keys()) if fi else []
        print(f"fast_info keys: {keys}")
        
        last_price = fi.get('lastPrice')
        print(f"fast_info['last_price']: {last_price}")
        
        if last_price is None:
            print("fast_info missing price, checking info...")
            info = t.info
            print(f"info keys: {list(info.keys())[:5]}...") # Just show first few
            print(f"info['regularMarketPrice']: {info.get('regularMarketPrice')}")
            print(f"info['currentPrice']: {info.get('currentPrice')}")
            
    except Exception as e:
        print(f"ERROR for {symbol}: {e}")

if __name__ == "__main__":
    check_ticker("SPY")
    check_ticker("BTC-USD")
    check_ticker("AACB") # The one user failed on