From 265c02b0c182b4db9a5f1c5994e57a5ab2a3563d Mon Sep 17 00:00:00 2001
From: keang <skeang@gmail.com>
Date: Mon, 3 Oct 2016 08:27:37 +0800
Subject: [PATCH] MAINT: Restore @property decorator

This will keep `opens`, `closes`, `early_closes`, etc to the
same pattern.
---
 zipline/utils/calendars/trading_calendar.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/zipline/utils/calendars/trading_calendar.py b/zipline/utils/calendars/trading_calendar.py
index 0197ece1..f17ec923 100644
--- a/zipline/utils/calendars/trading_calendar.py
+++ b/zipline/utils/calendars/trading_calendar.py
@@ -237,6 +237,7 @@ class TradingCalendar(with_metaclass(ABCMeta)):
 
     # -----
 
+    @property
     def opens(self):
         return self.schedule.market_open