python sys.excepthook problem, causing the actual python executable to terminate (not a python .py exception / clean exit)

[delandtj]

run under gdb isn't useful (except it shows threads being used):

(gdb) set args /usr/local/bin/js_shell
(gdb) run
Starting program: /usr/bin/python3 /usr/local/bin/js_shell
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
* ***Application started***: jsshell
[New Thread 0x7ffff30fa700 (LWP 29770)]
Python 3.6.6 (default, Jun 27 2018, 14:44:17) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: [New Thread 0x7ffff26b9700 (LWP 29772)]
[Thread 0x7ffff26b9700 (LWP 29772) exited]
[New Thread 0x7ffff26b9700 (LWP 29773)]
[Thread 0x7ffff26b9700 (LWP 29773) exited]
[New Thread 0x7ffff26b9700 (LWP 29774)]
[Thread 0x7ffff26b9700 (LWP 29774) exited]
[New Thread 0x7ffff26b9700 (LWP 29775)]
[Thread 0x7ffff26b9700 (LWP 29775) exited]
[New Thread 0x7ffff26b9700 (LWP 29781)]
[Thread 0x7ffff26b9700 (LWP 29781) exited]
j.data.schema.test()[New Thread 0x7ffff26b9700 (LWP 29782)]
[Thread 0x7ffff26b9700 (LWP 29782) exited]
[New Thread 0x7ffff26b9700 (LWP 29783)]
[Thread 0x7ffff26b9700 (LWP 29783) exited]
In [1]: j.data.schema.test()
[New Thread 0x7ffff26b9700 (LWP 29786)]
[New Thread 0x7fffe1fff700 (LWP 29787)]
[New Thread 0x7fffe17fe700 (LWP 29788)]
prop:nr                        (integer)   default:4
prop:date_start                (date)
prop:description               (string)   default:""
prop:token_price               (numeric)   default:b'\x01\x97\x00\x00\x00\x00\x00\x00$@'
prop:cost_estimate             (float)
prop:U                         (float)
prop:llist2                    (list(string))
prop:llist                     (list(string))
prop:llist3                    (list(float))   default:[1.0, 2.0, 3.0]
prop:llist4                    (list(string))   default:['1', '2', '3']
prop:llist5                    (list(integer))   default:[1, 2, 3]

[Thread 0x7fffe17fe700 (LWP 29788) exited]
[Thread 0x7fffe1fff700 (LWP 29787) exited]
[Thread 0x7ffff26b9700 (LWP 29786) exited]
$name$

Error in sys.excepthook:

Original exception was:
[Thread 0x7ffff30fa700 (LWP 29770) exited]
[Inferior 1 (process 29761) exited with code 01]
(gdb) 

without gdb:

(stretch2)root@debianuc:~# js_shell
* ***Application started***: jsshell
Python 3.6.6 (default, Jun 27 2018, 14:44:17) 
Type 'copyright', 'credits' or 'license' for more information
IPython 6.5.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: j.data.schema.test()
prop:nr                        (integer)   default:4
prop:date_start                (date)
prop:description               (string)   default:""
prop:token_price               (numeric)   default:b'\x01\x97\x00\x00\x00\x00\x00\x00$@'
prop:cost_estimate             (float)
prop:U                         (float)
prop:llist2                    (list(string))
prop:llist                     (list(string))
prop:llist3                    (list(float))   default:[1.0, 2.0, 3.0]
prop:llist4                    (list(string))   default:['1', '2', '3']
prop:llist5                    (list(integer))   default:[1, 2, 3]

$name$

Error in sys.excepthook:

Original exception was:
(stretch2)root@debianuc:~#

apparently this is a known issue, an actual bug in the python executable
pytest-dev/execnet#30

[delandtj]

ok it's an interaction of python3 and bpython. this works fine:

diff --git a/DigitalMeLib/data/schema/SchemaFactory.py b/DigitalMeLib/data/schema/SchemaFactory.py
index a5e3267..81d866c 100755
--- a/DigitalMeLib/data/schema/SchemaFactory.py
+++ b/DigitalMeLib/data/schema/SchemaFactory.py
@@ -138,8 +138,8 @@ class SchemaFactory(JSBASE):
         o.token_price = "10 EUR"
         o.description = "something"
 
-        import bpython;
-        bpython.embed(locals(), banner='$name$')
+        import IPython
+        IPython.embed(header='$name$')
 
         o.cobj