def excepthook(exc_type, exc_value, traceback_obj):
# "redirect" stderr to an in memory buffer in order to capture output of sys.excepthook() for use in GUI message
sys.stderr = _text_buffer
_original_hook(exc_type, exc_value, traceback_obj)
# This is for me using PyCharm.
# It will cause the traceback to be printed in the "Run" window,
# providing a clickable link to the offending line.
print(_text_buffer.getvalue(), file=_original_stderr)
# make traceback visible in GUI
font = QFont("non-existent")
font.setStyleHint(QFont.StyleHint.TypeWriter)
error_box = QMessageBox()
error_box.setFont(font)
error_box.setIcon(QMessageBox.Critical)
error_box.setWindowTitle(
"Warning: Something Wicked This Way Comes...\t\t\t\t\t\t\t\t\t")
error_box.setText("<h2>An unhandled exception occurred.</h2>")
error_box.setInformativeText(_text_buffer.getvalue())
error_box.exec()
# prevent accumulation of messages cluttering output
_text_buffer.truncate(0)
sys.stderr = _original_stderr
def addMainApp(self):
self.lineNumberedTextEdit = LineNumberedTextEdit()
self.textEdit = self.lineNumberedTextEdit.getTextEdit()
font = QFont()
font.setStyleHint(QFont().StyleHint.Monospace)
font.setFamily('monospace')
self.textEdit.setFont(font)
self.setCentralWidget(self.lineNumberedTextEdit)