INNER CODE UNIT · Python

from_dt_pad

aaryansinha16/AI-trader · backend/app.py:648

            from_dt_pad = from_dt - timedelta(seconds=30)
            to_dt_pad = to_dt + timedelta(seconds=30)
            logger.info(
                f"Tick backfill: filling gap "
                f"{from_dt.strftime('%H:%M:%S')} → {to_dt.strftime('%H:%M:%S')} "
                f"({(to_dt - from_dt).total_seconds():.0f}s)"
            )
            try:
                ticks = td_bf.fetch_historical_ticks("NIFTY-I", start=from_dt_pad, end=to_dt_pad)
            except Exception as e:
                logger.warning(f"Tick backfill REST failed for gap: {e}")
                continue
            if ticks.empty:
                continue

            ticks = ticks.copy()
            ticks["symbol"] = "NIFTY-I"
            required = ["timestamp", "symbol", "price", "volume", "oi",

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