OpenBB-finance/OpenBB · error · OpenBBError

Failed to get ticker data -> {e}: {e.args[0]}

Error message

Failed to get ticker data -> {e}: {e.args[0]}

What it means

Catch-all OpenBBError in get_ticker_data: any exception inside the try block — including the in-band error raise (276), network failures, and response parse errors — is re-raised as 'Failed to get ticker data -> {e}: {e.args[0]}'. Caution: the unconditional e.args[0] indexing raises IndexError ('tuple index out of range') when the caught exception has empty args, obscuring the original error.

Source

Thrown at openbb_platform/providers/deribit/openbb_deribit/utils/helpers.py:212

    -------
    dict
        The ticker data.
    """
    # pylint: disable=import-outside-toplevel
    from openbb_core.provider.utils.helpers import amake_request

    url = f"{BASE_URL}/api/v2/public/ticker?instrument_name={symbol}"

    try:
        response = await amake_request(url)
        if response.get("error"):  # type: ignore[union-attr]
            raise OpenBBError(response.get("error"))  # type: ignore[union-attr]
        data = response.get("result", {})  # type: ignore[union-attr]
        stats = data.pop("stats", {})
        return {**data, **stats}

    except Exception as e:  # pylint: disable=broad-except
        raise OpenBBError(f"Failed to get ticker data -> {e}: {e.args[0]}") from e


async def get_perpetual_symbols() -> dict:
    """
    Get perpetual symbols.

    Returns
    -------
    dict
        A dictionary of short symbols to full perpetual symbols.
    """
    instruments = await get_instruments("all", "future")
    return {
        d["instrument_name"].split("-")[0].replace("_", ""): d["instrument_name"]
        for d in instruments
        if d.get("settlement_period") == "perpetual"
    }

View on GitHub (pinned to 3e071fcc2c)

Solutions

1. Parse the '{e}' portion (between '->' and the last ':') to recover the original exception; the trailing segment is e.args[0].
2. If the trailing segment says 'tuple index out of range', the true failure was a timeout-style exception with no args — check network/timeout conditions.
3. Fix the underlying cause: invalid instrument name (code 11000), connectivity, or rate limiting.
4. In your own forks, guard with e.args[0] if e.args else str(e) to avoid masking.

Example fix

# before (library code, helpers.py)
except Exception as e:
    raise OpenBBError(f"Failed to get ticker data -> {e}: {e.args[0]}") from e

# after
except Exception as e:
    detail = e.args[0] if e.args else str(e)
    raise OpenBBError(f"Failed to get ticker data -> {e}: {detail}") from e

from openbb_core.provider.utils.errors import OpenBBError
try:
    t = await get_ticker_data(symbol)
except OpenBBError as e:
    msg = str(e)
    if msg.endswith("tuple index out of range"):
        # real cause was an exception with empty args (usually a timeout)
        handle_timeout(symbol)
    elif "Failed to get ticker data" in msg:
        handle_api_error(msg, symbol)
    else:
        raise

When it happens

Trigger: The in-band 'error' OpenBBError fires here and is double-wrapped; a network exception with no args (some timeout classes) makes e.args[0] itself fail; or response is not a dict, making .get fail with AttributeError.

Common situations: Any ticker failure surfaces through this single message, so diagnosing requires reading the middle segment. Empty-args exceptions (e.g. asyncio.TimeoutError()) replace the real cause with 'tuple index out of range' — a known sharp edge.

Related errors

• Failed to get futures curve -> {e.__class__.__name__ if hasa
• Error fetching data: {e}
• No data found for the given symbol(s).
• Error fetching data: {e}
• OpenBBError(e) from e

AI-assisted analysis of OpenBB-finance/OpenBB@3e071fcc2c (2026-08-14). Data as JSON: /api/errors/f2fbc486c9977f87. Report an issue: GitHub.