From 90c67b40c376c477f2377068c41612c95d8af707 2019-06-19 02:31:35
From: Matthias Bussonnier <bussonniermatthias@gmail.com>
Date: 2019-06-19 02:31:35
Subject: [PATCH] Restore trace function after exiting debugger.

This should bump coverage; as pdb test where removing the coverage
function.

---

diff --git a/IPython/core/magics/execution.py b/IPython/core/magics/execution.py
index 393ee9b..0a7ea0e 100644
--- a/IPython/core/magics/execution.py
+++ b/IPython/core/magics/execution.py
@@ -934,6 +934,7 @@ python-profiler package from non-free.""")
                 deb._exec_filename = filename
             while True:
                 try:
+                    trace = sys.gettrace()
                     deb.run(code, code_ns)
                 except Restart:
                     print("Restarting")
@@ -943,6 +944,8 @@ python-profiler package from non-free.""")
                     continue
                 else:
                     break
+                finally:
+                    sys.settrace(trace)
             
 
         except: