Comments on: wxPython – Redirecting stdout / stderr

By: Anonymous

Anonymous — Wed, 18 Aug 2010 15:24:00 +0000

What do you mean? It won’t be able to redirect anything until the MainLoop starts. If you have loops, put them in a function and call that after your application starts. You can use a button or just wx.CallAfter.

- Mike

By: Dani Valverde

Dani Valverde — Wed, 18 Aug 2010 15:18:00 +0000

Thank you so much for this interesting post. However, it seems that it only redirects the stdout when the function is complete. In my case, there are loops inside the function, and I would like to redirect the stdout at each loop. How can I do it?
Cheers!

Dani

By: paladin

paladin — Fri, 13 Aug 2010 00:24:00 +0000

Thanks for the quick response. It worked perfectly.

By: Anonymous

Anonymous — Thu, 12 Aug 2010 03:10:00 +0000

Just save a reference to stdout. Something like “self.stdoutRef = sys.stdout”. Then after you’ve redirected it, you can restore it by doing the reverse: sys.stdout = self.stdoutRef

By: paladin

paladin — Thu, 12 Aug 2010 00:15:00 +0000

Can you tell me how to set things back to stdout when I finish with the display

By: Mike

Mike — Fri, 05 Feb 2010 04:01:03 +0000

Thanks guys. Sorry my commenting system didn’t keep the formatting of your code very well. I think someone mentioned that I should try writing a redirect logging tutorial one time, but now I don’t have to.

- Mike

By: Mike

Mike — Fri, 05 Feb 2010 04:01:00 +0000

- Mike

By: mgag

mgag — Fri, 05 Feb 2010 01:07:31 +0000

I was posting from multiple threads, so I needed the fix from the original submission,

class WxLog(logging.Handler):
def __init__(self, ctrl):
logging.Handler.__init__(self)
self.ctrl = ctrl

def emit(self, record):
log = self.format(record)+”\n”
wx.CallAfter(self.ctrl.AppendText, log)

By: mgag

mgag — Fri, 05 Feb 2010 01:07:00 +0000

I was posting from multiple threads, so I needed the fix from the original submission,

class WxLog(logging.Handler):
def __init__(self, ctrl):
logging.Handler.__init__(self)
self.ctrl = ctrl

def emit(self, record):
log = self.format(record)+”n”
wx.CallAfter(self.ctrl.AppendText, log)

By: mgag

mgag — Fri, 05 Feb 2010 01:06:17 +0000

Figured it out – that didn’t take long. I am posting from threads, so I needed the thread-safe version of the “emit”, like so,

class WxLog(logging.Handler):
def __init__(self, ctrl):
logging.Handler.__init__(self)
self.ctrl = ctrl

def emit(self, record):
log = self.format(record)+”\n”
wx.CallAfter(self.ctrl.AppendText, log)