From a091a7099d6d6a19f34ad1355e7b0052592d4d41 Mon Sep 17 00:00:00 2001
From: scls19fr <scls19fr@users.noreply.github.com>
Date: Thu, 19 Feb 2015 10:57:03 +0100
Subject: [PATCH] Update tslib.pyx

Fix https://github.com/pydata/pandas/issues/9513
---
 pandas/tslib.pyx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pandas/tslib.pyx b/pandas/tslib.pyx
index 85cb50b8f18ae..d311cf04466f2 100644
--- a/pandas/tslib.pyx
+++ b/pandas/tslib.pyx
@@ -601,6 +601,9 @@ class NaTType(_NaT):
     def __reduce__(self):
         return (__nat_unpickle, (None, ))
 
+    def date(self):
+        raise ValueError("pd.NaT.date() can't return a valid date")
+
 fields = ['year', 'quarter', 'month', 'day', 'hour',
           'minute', 'second', 'millisecond', 'microsecond', 'nanosecond',
           'week', 'dayofyear']