diff --git a/test.py b/test.py
index 2beb058f..9d71a46f 100644
--- a/test.py
+++ b/test.py
@@ -64,6 +64,9 @@ def test_vhpidirect_quickstart_wrapping_time(self):
     def test_vhpidirect_quickstart_wrapping_exitcb(self):
         check_call(self.shell + [str(self.vhpidirect / 'quickstart' / 'wrapping' / 'exitcb' / 'run.sh')], shell=True)
 
+    def test_vhpidirect_quickstart_wrapping_exitcb_py(self):
+        check_call(self.shell + [str(self.vhpidirect / 'quickstart' / 'wrapping' / 'exitcb' / 'py' / 'vunit_run.sh')], shell=True)
+
     @unittest.skipUnless(
         platform != 'win32',
         "win: needs investigation, output of list-link seems to have wrong path format",
diff --git a/vhpidirect/quickstart/wrapping/exitcb/caux.c b/vhpidirect/quickstart/wrapping/exitcb/caux.c
index e5670107..30dbaae7 100644
--- a/vhpidirect/quickstart/wrapping/exitcb/caux.c
+++ b/vhpidirect/quickstart/wrapping/exitcb/caux.c
@@ -3,7 +3,6 @@
 
 extern int ghdl_main(int argc, void** argv);
 
-// Procedure to be executed when GHDL exits.
 static void exit_handler(void) {
   printf("This is the exit handler.\n");
 }
@@ -12,8 +11,8 @@ int wrapper(int argc, void** argv) {
   atexit(exit_handler);
 
   printf("Hello wrapper!\n");
-  printf("ghdl_main: %d\n", ghdl_main(argc, argv));
-  printf("Bye wrapper!\n");
+  int ecode = ghdl_main(argc, argv);
+  printf("Bye wrapper <%d>!\n", ecode);
 
   return 0;
 }
diff --git a/vhpidirect/quickstart/wrapping/exitcb/main_sigabrt.c b/vhpidirect/quickstart/wrapping/exitcb/main_sigabrt.c
index 6c5b05e4..a323d931 100644
--- a/vhpidirect/quickstart/wrapping/exitcb/main_sigabrt.c
+++ b/vhpidirect/quickstart/wrapping/exitcb/main_sigabrt.c
@@ -6,7 +6,7 @@ extern int wrapper(int argc, void** argv);
 void sigabrtHandler(int sig_num) {
   // Reset handler to catch SIGABRT next time. Refer http://en.cppreference.com/w/c/program/signal
   signal(SIGABRT, sigabrtHandler);
-  printf("\nSIGABRT caught %d!\n", sig_num);
+  printf("SIGABRT caught %d!\n", sig_num);
   fflush(stdout);
 }
 
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/cosim.py b/vhpidirect/quickstart/wrapping/exitcb/py/cosim.py
new file mode 100644
index 00000000..7243a8dd
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/cosim.py
@@ -0,0 +1,8 @@
+from pyaux import dlopen, dlclose, enc_args, run
+from pathlib import Path
+
+print("PY COSIM ENTER")
+
+run(str(Path(__file__).resolve().parent.parent / "tb-fail.so"), 0, None)
+
+print("PY COSIM EXIT")
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/pyaux.py b/vhpidirect/quickstart/wrapping/exitcb/py/pyaux.py
new file mode 100644
index 00000000..c0dada6a
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/pyaux.py
@@ -0,0 +1,35 @@
+from pathlib import Path
+import ctypes
+import _ctypes
+
+
+def dlopen(path):
+    if not Path(path).exists():
+        print('Executable binary not found: ' + path)
+        exit(1)
+    try:
+        return ctypes.CDLL(path)
+    except OSError:
+        print('Loading executables dynamically seems not to be supported on this platform')
+        exit(1)
+
+
+def dlclose(obj):
+    _ctypes.dlclose(obj._handle)
+
+
+def enc_args(args):
+    xargs = (ctypes.POINTER(ctypes.c_char) * len(args))()
+    for idx, arg in enumerate(args):
+        xargs[idx] = ctypes.create_string_buffer(arg.encode('utf-8'))
+    return xargs
+
+def run(path, argc, argv):
+    print("PY RUN ENTER")
+    ghdl = dlopen(path)
+    ghdl.main(argc, argv)
+    # FIXME With VHDL 93, the execution is Aborted and Python exits here
+
+    dlclose(ghdl)
+
+    print("PY RUN EXIT")
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/vunit_cosim.py b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_cosim.py
new file mode 100644
index 00000000..ac39fbda
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_cosim.py
@@ -0,0 +1,14 @@
+from pyaux import dlopen, dlclose, enc_args, run
+from pathlib import Path
+from json import load
+
+print("PY COSIM ENTER")
+
+with (Path(__file__).parent / 'vunit_out' / 'cosim' / 'tb_abrt.json').open() as json_file:
+    ARGS = load(json_file)
+
+XARGS = enc_args([ARGS["bin"]] + ARGS["sim"])
+
+run(ARGS["bin"], len(XARGS) - 1, XARGS)
+
+print("PY COSIM EXIT")
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.py b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.py
new file mode 100644
index 00000000..70950420
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.py
@@ -0,0 +1,43 @@
+from vunit import VUnit
+from os import makedirs, getenv
+from pathlib import Path
+from shutil import copyfile
+import re
+
+
+def post_func(results):
+    """
+    Copy args.json to vunit/cosim/*.json
+    """
+    report = results.get_report()
+    cosim_args_dir = Path(report.output_path) / "cosim"
+    try:
+        makedirs(str(cosim_args_dir))
+    except FileExistsError:
+        pass
+    for key, item in report.tests.items():
+        copyfile(
+            str(Path(item.path) / "ghdl" / "args.json"),
+            str(
+                cosim_args_dir / ("%s.json" % re.search(r"lib\.(.+)\.all", key)[1])
+            ),
+        )
+
+
+ROOT = Path(__file__).resolve().parent
+
+vu = VUnit.from_argv(vhdl_standard=getenv('VUNIT_VHDL_STANDARD', '2008'))
+
+lib = vu.add_library('lib').add_source_files(str(ROOT / 'vunit_tb.vhd'))
+
+vu.set_sim_option('ghdl.elab_flags', [
+    '-shared',
+    '-Wl,-fPIC',
+    '-Wl,' + str(ROOT.parent / 'caux.c'),
+    '-Wl,' + str(ROOT.parent / 'main_sigabrt.c')
+])
+
+vu.set_sim_option("ghdl.elab_e", True)
+vu._args.elaborate = True
+
+vu.main(post_run=post_func)
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.sh b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.sh
new file mode 100755
index 00000000..097e46c8
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_run.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env sh
+
+cd $(dirname "$0")
+
+export VUNIT_VHDL_STANDARD="2008"
+python3 vunit_run.py -v
+python3 vunit_cosim.py
+
+export VUNIT_VHDL_STANDARD="93"
+python3 vunit_run.py -v
+python3 vunit_cosim.py
diff --git a/vhpidirect/quickstart/wrapping/exitcb/py/vunit_tb.vhd b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_tb.vhd
new file mode 100644
index 00000000..5c5c7b1e
--- /dev/null
+++ b/vhpidirect/quickstart/wrapping/exitcb/py/vunit_tb.vhd
@@ -0,0 +1,24 @@
+library vunit_lib;
+use vunit_lib.run_pkg.all;
+use vunit_lib.logger_pkg.all;
+
+entity tb_abrt is
+  generic ( runner_cfg : string );
+end entity;
+
+architecture tb of tb_abrt is
+
+  constant block_len : natural := 5;
+
+begin
+
+  main: process
+    variable val, ind: integer;
+  begin
+    test_runner_setup(runner, runner_cfg);
+    info("Hello wrapping/exitcb/py_vunit!");
+    test_runner_cleanup(runner);
+    wait;
+  end process;
+
+end architecture;
diff --git a/vhpidirect/quickstart/wrapping/exitcb/run.sh b/vhpidirect/quickstart/wrapping/exitcb/run.sh
index b9b8f7e0..0d770a6f 100755
--- a/vhpidirect/quickstart/wrapping/exitcb/run.sh
+++ b/vhpidirect/quickstart/wrapping/exitcb/run.sh
@@ -4,98 +4,108 @@ set -e
 
 cd $(dirname "$0")
 
+for std in '08' '93'; do
 
-echo "> Analyze tb.vhd"
-ghdl -a tb.vhd
+echo "> [$std] Analyze tb.vhd"
+ghdl -a --std="$std" tb.vhd
 
 
-echo "> Build tb pass (with main.c)"
-ghdl -e -Wl,caux.c -Wl,main.c -o tb_pass tb pass
+echo "> [$std] Build tb pass"
+ghdl -e --std="$std" -Wl,caux.c -Wl,main.c -o tb"$std"_pass tb pass
 
-echo "> Execute tb_pass"
-./tb_pass
+echo "> [$std] Execute tb_pass"
+./tb"$std"_pass
 echo $?
 echo ""
 
 
-echo "> Build tb fail (with main.c)"
-ghdl -e -Wl,caux.c -Wl,main.c -o tb_fail tb fail
+echo "> [$std] Build tb-pass.so"
+ghdl -e --std="$std" -shared -Wl,-fPIC -Wl,caux.c -Wl,main.c tb pass
+mv tb-pass.so tb-fail.so
+echo ""
 
 set +e
 
-echo "> Execute tb_fail"
-./tb_fail
-echo $?
+echo "> [$std] Python cosim pass"
+python3 py/cosim.py
 echo ""
 
 set -e
 
 
-echo "> Build tb pass_sigabrt (with main_sigabrt.c)"
-ghdl -e -Wl,caux.c -Wl,main_sigabrt.c -o tb_pass_sigabrt tb pass
+echo "> [$std] Build tb fail"
+ghdl -e --std="$std" -Wl,caux.c -Wl,main.c -o tb"$std"_fail tb fail
 
-echo "> Execute tb_pass_sigabrt"
-./tb_pass_sigabrt
+set +e
+
+echo "> [$std] Execute tb_fail"
+./tb"$std"_fail
 echo $?
 echo ""
 
+set -e
+
 
-echo "> Build tb fail_sigabrt (with main_sigabrt.c)"
-ghdl -e -Wl,caux.c -Wl,main_sigabrt.c -o tb_fail_sigabrt tb fail
+echo "> [$std] Build tb-fail.so"
+ghdl -e --std="$std" -shared -Wl,-fPIC -Wl,caux.c -Wl,main.c tb fail
+echo ""
 
 set +e
 
-echo "> Execute tb_fail_sigabrt"
-./tb_fail_sigabrt
-echo $?
+echo "> [$std] Python cosim fail"
+python3 py/cosim.py
 echo ""
 
 set -e
 
 
-echo "> Analyze --std=08 tb.vhd"
-ghdl -a --std=08 tb.vhd
-
-
-echo "> Build --std=08 tb pass (with main.c)"
-ghdl -e --std=08 -Wl,caux.c -Wl,main.c -o tb_pass08 tb pass
+echo "> [$std] Build tb pass_sigabrt"
+ghdl -e --std="$std" -Wl,caux.c -Wl,main_sigabrt.c -o tb"$std"_pass_sigabrt tb pass
 
-echo "> Execute tb_pass08"
-./tb_pass08
+echo "> [$std] Execute tb_pass_sigabrt"
+./tb"$std"_pass_sigabrt
 echo $?
 echo ""
 
+set -e
+
 
-echo "> Build --std=08 tb fail (with main.c)"
-ghdl -e --std=08 -Wl,caux.c -Wl,main.c -o tb_fail08 tb fail
+echo "> [$std] Build tb-pass.so (sigabrt)"
+ghdl -e --std="$std" -shared -Wl,-fPIC -Wl,caux.c -Wl,main_sigabrt.c tb pass
+mv tb-pass.so tb-fail.so
+echo ""
 
 set +e
 
-echo "> Execute --std=08 tb_fail08"
-./tb_fail08
-echo $?
+echo "> [$std] Python cosim pass (sigabrt)"
+python3 py/cosim.py
 echo ""
 
 set -e
 
 
-echo "> Build --std=08 tb pass (with main_sigabrt.c)"
-ghdl -e --std=08 -Wl,caux.c -Wl,main_sigabrt.c -o tb_pass08_sigabrt tb pass
+echo "> [$std] Build tb fail_sigabrt)"
+ghdl -e --std="$std" -Wl,caux.c -Wl,main_sigabrt.c -o tb"$std"_fail_sigabrt tb fail
+
+set +e
 
-echo "> Execute tb_pass08_sigabrt"
-./tb_pass08_sigabrt
+echo "> [$std] Execute tb_fail_sigabrt"
+./tb"$std"_fail_sigabrt
 echo $?
 echo ""
 
+set -e
 
-echo "> Build --std=08 tb fail (with main_sigabrt.c)"
-ghdl -e --std=08 -Wl,caux.c -Wl,main_sigabrt.c -o tb_fail08_sigabrt tb fail
+echo "> [$std] Build tb-fail.so (sigabrt)"
+ghdl -e --std="$std" -shared -Wl,-fPIC -Wl,caux.c -Wl,main_sigabrt.c tb fail
+echo ""
 
 set +e
 
-echo "> Execute --std=08 tb_fail08_sigabrt"
-./tb_fail08_sigabrt
-echo $?
+echo "> [$std] Python cosim fail (sigabrt)"
+python3 py/cosim.py
 echo ""
 
 set -e
+
+done