python - Grab any exception in PyQt -

i've created gui app in pyqt, want share many people. unexpected exceptions , take granted - after every exception improve code , gets better , better.

i use logger recording these exceptions , special hook pyqt silenced exceptions. code looks this:

logger

def setlogger(level=logging.debug,               name="my_logger",               file=join("src", "log.out")):      logger = logging.getlogger(name)     logger.setlevel(level)      # console logger     ch = logging.streamhandler()     console_lvl = logging.debug     ch.setlevel(console_lvl)     formatter = logging.formatter('%(message)s')     ch.setformatter(formatter)      #file logger         fh = logging.filehandler(file)     fh.setlevel(level)     formatter = logging.formatter(         '%(asctime)s :: %(name)s - %(message)s',         datefmt='%m/%d/%y %i:%m:%s %p')     fh.setformatter(formatter)     logger.addhandler(ch)     logger.addhandler(fh)     return logger 

2 typical classes in gui

class mainwindow(qtgui.qmainwindow):      def __init__(self):         self.logger = setlogger(name='main_window')         [...]  class uploaddialog(qtgui.qdialog):  def __init__(self):     self.logger = setlogger(name='upload_dialog')     [...] 

and on
pyqt has silenced exceptions - exception occurs program keeps running. use special hook situation (have seen somewhere, not code)

import sys sys._excepthook = sys.excepthook  def exception_hook(exctype, value, traceback):     sys._excepthook(exctype, value, traceback)     sys.exit(1) 

and want grab exception, users of program in case of crash send me log.out , see full log.

i've started this.

try:     app = qtgui.qapplication(sys.argv)     window = mainwindow()     window.show()     sys.exit(app.exec_()) except exception:     logger.exception("mainwindow exception") 

i worked well, until exception raised inside uploaddialog. nothing 'recorded'. did:

#inside mainwindow class def rundialog(self):     try:         dialog = uploaddialog()         dialog.exec_()     except exception:         self.logger.exception("dialog exception")         sys.exit(1) 

again, ok, until exception rised inside workthread (inherited qthread class background upload). , again.

#inside uploaddialog def upload(self):     # initialized self.task = workthread()     try:         self.task.start()     except exception:         self.logger.exception("exception in workthread") 

and exception raised not after start of workthread when initializing, so

class uploaddialog(qtgui.qdialog):      def __init__(self):         try:             self.task = workthread()         except exception:             self.logger.exception("exception in workthread") 

and here took head , screamed myself - "stop it. you're doing wrong. it's not pythonic, it's dirty, makes eyes bleed".

so, i'm asking - there elegant , pythonic way grab absolutely exception, raised in pyqt app 1 try...except block?

the point of using excepthook can monitor all exceptions raised program, , handle them centrally.

so should rid of of try/except blocks, , log exceptions inside excepthook function. "most", because may affected bug 1230540, sys.excepthook not called correctly outside of main thread. see tracker thread workarounds that, or this answer.