From 9860401a5d33d50646ea18ce0c49c0a6153914c2 2015-03-20 18:39:34
From: Min RK <benjaminrk@gmail.com>
Date: 2015-03-20 18:39:34
Subject: [PATCH] remove unnecessary initial assignments in launchers

ran afoul of allow_none default changes
---

diff --git a/IPython/parallel/apps/launcher.py b/IPython/parallel/apps/launcher.py
index 9b0a331..985d68c 100644
--- a/IPython/parallel/apps/launcher.py
+++ b/IPython/parallel/apps/launcher.py
@@ -114,8 +114,6 @@ class BaseLauncher(LoggingConfigurable):
         super(BaseLauncher, self).__init__(work_dir=work_dir, config=config, **kwargs)
         self.state = 'before' # can be before, running, after
         self.stop_callbacks = []
-        self.start_data = None
-        self.stop_data = None
 
     @property
     def args(self):
@@ -368,7 +366,6 @@ class LocalEngineSetLauncher(LocalEngineLauncher):
         super(LocalEngineSetLauncher, self).__init__(
             work_dir=work_dir, config=config, **kwargs
         )
-        self.stop_data = {}
 
     def start(self, n):
         """Start n engines by profile or profile_dir."""