python: Added stop_execution() function that allows debugging with printing and just giving up.

Author: levy

python/inet/common/util.py

@@ -27,6 +27,19 @@
 STDOUT_LEVEL = 25  # between INFO (20) and WARNING (30)
 STDERR_LEVEL = 35  # between WARNING (30) and ERROR (40)
 
+class StopExecutionException(Exception):
+    pass
+
+class TerminalInteractiveShell(IPython.terminal.interactiveshell.TerminalInteractiveShell):
+    def _showtraceback(self, etype, evalue, stb):
+        if isinstance(evalue, StopExecutionException):
+            _logger.warning("Execution stopped programmatically by calling stop_execution()")
+            return None
+        super()._showtraceback(etype, evalue, stb)
+
+def stop_execution():
+    raise StopExecutionException()
+
 def enable_autoreload():
     ipython = IPython.get_ipython()
     ipython.magic("load_ext autoreload")

python/inet/repl.py

@@ -6,6 +6,7 @@
 from omnetpp.scave.analysis import *
 from omnetpp.scave.results import *
 
+from inet.common import *
 from inet.project.omnetpp import *
 from inet.simulation import *
 from inet.test import *
@@ -38,6 +39,7 @@ def run_repl_main():
         else:
             _logger.info("OMNeT++ Python support is loaded.")
             app = IPython.terminal.ipapp.TerminalIPythonApp.instance()
+            app.interactive_shell_class = TerminalInteractiveShell
             app.display_banner = False
             app.exec_lines = ["from inet import *", "enable_autoreload()", "register_key_bindings()"]
             app.initialize(argv=[])