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-rw-r--r--python/analytics/index.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/analytics/index.py b/python/analytics/index.py
index 85ba3474..78b52fae 100644
--- a/python/analytics/index.py
+++ b/python/analytics/index.py
@@ -92,7 +92,7 @@ class Index():
if d > self.trade_date:
return 1
else:
- return math.exp( - self.flat_hazard * (d - self.trade_date)/365)
+ return math.exp( - self.flat_hazard * (d - self.trade_date).days/365)
def forward_pv(self, exercise_date):
"""This is default adjusted forward price at time exercise_date"""