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2026-08-01 10:33:19 +08:00
commit d9a34d4f20
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+"""杠杆口径 v1：杠杆 = 标的指数 ÷ 期权卖一（ask）。"""
+
+from __future__ import annotations
+
+LEVERAGE_FORMULA_VERSION = "1.0"
+
+
+def option_leverage(index_px: float, ask: float | None) -> float | None:
+    """index_px / ask；ask 无效时返回 None。"""
+    if index_px is None or index_px <= 0:
+        return None
+    if ask is None or ask <= 0:
+        return None
+    return float(index_px) / float(ask)