From fd8a728e6adb819bb9aa2b163f055195e2922652 2016-05-17 21:20:59
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2016-05-17 21:20:59
Subject: [PATCH] Eventloops are not created if IPY_TEST_SIMPLE_PROMPT set, or not a tty.

---

diff --git a/IPython/terminal/ptshell.py b/IPython/terminal/ptshell.py
index 7751a05..f0d4dcc 100644
--- a/IPython/terminal/ptshell.py
+++ b/IPython/terminal/ptshell.py
@@ -382,8 +382,9 @@ class TerminalInteractiveShell(InteractiveShell):
                 break
             except KeyboardInterrupt:
                 print("\nKeyboardInterrupt escaped interact()\n")
-
-        self._eventloop.close()
+        
+        if hasattr(self, '_eventloop'):
+            self._eventloop.close()
 
     _inputhook = None
     def inputhook(self, context):