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fix: use index-based token lookup to handle malformed spot_meta (issu… #279

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fix: use index-based token lookup to handle malformed spot_meta (issu… #279

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21 changes: 14 additions & 7 deletions hyperliquid/info.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,17 +40,24 @@ def __init__(
self.asset_to_sz_decimals = {}

# spot assets start at 10000
# Build index-based token lookup to handle cases where token indices don't match array positions
# Fixes issue #275: https://github.com/hyperliquid-dex/hyperliquid-python-sdk/issues/275
token_by_index = {token["index"]: token for token in spot_meta["tokens"]}

for spot_info in spot_meta["universe"]:
asset = spot_info["index"] + 10000
self.coin_to_asset[spot_info["name"]] = asset
self.name_to_coin[spot_info["name"]] = spot_info["name"]
base, quote = spot_info["tokens"]
base_info = spot_meta["tokens"][base]
quote_info = spot_meta["tokens"][quote]
self.asset_to_sz_decimals[asset] = base_info["szDecimals"]
name = f'{base_info["name"]}/{quote_info["name"]}'
if name not in self.name_to_coin:
self.name_to_coin[name] = spot_info["name"]
base_idx, quote_idx = spot_info["tokens"]
# Use index-based lookup instead of array position to avoid IndexError
# when testnet API returns malformed spot_meta with token indices exceeding array bounds
base_info = token_by_index.get(base_idx)
quote_info = token_by_index.get(quote_idx)
if base_info is not None and quote_info is not None:
self.asset_to_sz_decimals[asset] = base_info["szDecimals"]
name = f'{base_info["name"]}/{quote_info["name"]}'
if name not in self.name_to_coin:
self.name_to_coin[name] = spot_info["name"]

perp_dex_to_offset = {"": 0}
if perp_dexs is None:
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