From 4a39c1e3a442ff2d5d4510d724577a06eb5827ed Mon Sep 17 00:00:00 2001
From: Luke Campagnola <luke.campagnola@gmail.com>
Date: Wed, 26 Dec 2012 20:12:49 -0500
Subject: [PATCH] Fixed bug 1089042 (AttributeError in PlotItem)

---
 pyqtgraph/graphicsItems/PlotItem/PlotItem.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pyqtgraph/graphicsItems/PlotItem/PlotItem.py b/pyqtgraph/graphicsItems/PlotItem/PlotItem.py
index 6c2e1a6f..c362ffb5 100644
--- a/pyqtgraph/graphicsItems/PlotItem/PlotItem.py
+++ b/pyqtgraph/graphicsItems/PlotItem/PlotItem.py
@@ -158,6 +158,8 @@ class PlotItem(GraphicsWidget):
         self.autoAlpha = True
         self.spectrumMode = False
         
+        self.legend = None
+        
         ## Create and place axis items
         if axisItems is None:
             axisItems = {}
@@ -538,7 +540,7 @@ class PlotItem(GraphicsWidget):
             #item.sigPlotChanged.connect(self.plotChanged)
             #self.plotChanged()
         name = kargs.get('name', getattr(item, 'opts', {}).get('name', None))
-        if name is not None and self.legend is not None:
+        if name is not None and hasattr(self, 'legend') and self.legend is not None:
             self.legend.addItem(item, name=name)