From 4752b777921f54b3a23dfc2952697ddf11922112 Mon Sep 17 00:00:00 2001
From: Luke Campagnola <luke.campagnola@gmail.com>
Date: Thu, 2 Nov 2017 10:25:57 -0700
Subject: [PATCH] Fix parallelizer's progressdialog usage

---
 pyqtgraph/multiprocess/parallelizer.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pyqtgraph/multiprocess/parallelizer.py b/pyqtgraph/multiprocess/parallelizer.py
index 934bc6d0..86298023 100644
--- a/pyqtgraph/multiprocess/parallelizer.py
+++ b/pyqtgraph/multiprocess/parallelizer.py
@@ -101,7 +101,10 @@ class Parallelize(object):
                 
         else:  ## parent
             if self.showProgress:
-                self.progressDlg.__exit__(None, None, None)
+                try:
+                    self.progressDlg.__exit__(None, None, None)
+                except Exception:
+                    pass
 
     def runSerial(self):
         if self.showProgress: