From 56f341f077d4978aec389a18af82d3fc7aee5750 Mon Sep 17 00:00:00 2001
From: Eric Firing <efiring@hawaii.edu>
Date: Fri, 4 Sep 2015 17:50:13 -1000
Subject: [PATCH] Initialize private attributes in __init__.

---
 lib/matplotlib/lines.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
index b387b8729e86..b5ed9a16bdc5 100644
--- a/lib/matplotlib/lines.py
+++ b/lib/matplotlib/lines.py
@@ -373,6 +373,14 @@ def __init__(self, xdata, ydata,
         self._yorig = np.asarray([])
         self._invalidx = True
         self._invalidy = True
+        self._x = None
+        self._y = None
+        self._xy = None
+        self._path = None
+        self._transformed_path = None
+        self._subslice = False
+        self._x_filled = None  # used in subslicing; only x is needed
+
         self.set_data(xdata, ydata)
 
     def __getstate__(self):