Windows exception handling routine added

* After crash, the CLI window should now wait for keypress before closing.

prasopes/__main__.py

@@ -44,6 +44,13 @@ class QStatusBarLogger(logging.Handler):
         self.trigger.signal.emit()
 
 
+def show_exception_and_exit(exc_type, exc_value, tb):
+    import traceback
+    traceback.print_exception(exc_type, exc_value, tb)
+    raw_input("Press key to exit.")
+    sys.exit(-1)
+
+
 def load_file(parent, augCanvas, update, settings, loadthread, filename=None):
     """populates dataset and plots it"""
     directory = augCanvas.filename or settings.value("open_folder")
@@ -243,6 +250,9 @@ def about(parent):
 
 
 def main():
+    # thx to: https://stackoverflow.com/questions/779675/stop-python-from-closing-on-error/781074#781074
+    sys.excepthook = show_exception_and_exit
+
     app = QtWidgets.QApplication(sys.argv)
     loadthread = QtCore.QThread()