A decorator to wrap Qt slots, in Maya, so that exceptions are reported to Script Editor

maya_qt_error_decorator.py

"""
A decorator to wrap Qt slots, in Maya, so that exceptions are reported to Script Editor

Ref: https://groups.google.com/d/topic/python_inside_maya/xv7DCiocDZA/discussion

justinisrael@gmail.com
"""

#...
import sys
import traceback
import maya.cmds as cmds

def errorsToScriptEditor(fn):
	def wrapped(*args, **kwargs):
		try:
			return fn(*args, **kwargs)
		except:
			tb = traceback.extract_tb(sys.exc_traceback)
			tb = tb[1:] # pop this current wrapper from info
			lines = traceback.format_exception_only(sys.exc_type, sys.exc_value)
			lines.extend(traceback.format_list(tb))
			err = "Exception occurred in Qt slot:\n%s" % ''.join(lines)
			cmds.warning(err, noContext=True)
		
	return wrapped

class Xxx(QWidget):
	#...
	@errorsToScriptEditor
	def raisesError(self):
		raise NameError("I failed!")
		

Excellent idea. Thanks for posting this.

This is a life saver! Thanks so much!