This seems to work for me: from IronPython.Hosting import PythonEngine from System.IO import Stream
class C(Stream): @property def CanRead(self): return False @property def CanSeek(self): return False @property def CanWrite(self): return True @property def Position(self): return 0 def Write(self, chars, offset, count): from System import Console Console.WriteLine(chars) def Flush(self): pass py.SetStandardOutput(C()) py.Execute('print 3') I stuck to Console.WriteLine just to avoid having to think about sys across engines. Just out of curiosity - do you use the multiple engine support extensively? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Foord Sent: Monday, April 02, 2007 3:09 PM To: Discussion of IronPython Subject: Re: [IronPython] Weird Anomoly with SetStandardOutput Michael Foord wrote: > Michael Foord wrote: > >> Hello all, >> >> If I create a subclass of 'Stream' from IronPython - and set it onto a >> PythonEngine using 'SetStandardOutput', then it fails with the following >> message: >> >> Traceback (most recent call last): >> File C:\Python Projects\modules in >> progress\ironpython\embeddingDivert.py, lin >> e 32, in Initialize >> File , line 0, in SetStandardOutput##94 >> TypeError: issubclass: arg 1 must be a class >> >> If I define an empty class, and set this then I get the expected error >> 'AttributeError: 'Diverter' object has no attribute 'get_CanSeek'. >> >> [snip...] >> >> Unfortunately this problem is going to block us very rapidly at >> resolver. We can probably get round it by creating the stream subclass >> in C# - but what is the problem with doing it from IronPython ? >> >> >> > > Except that I realise that you may not have anticipated your users > passing .NET subclasses from one IronPython engine to another... > > Can this be fixed ? > Oh, and : http://www.voidspace.org.uk/ironpython/ip_in_ip.shtml Embedding IronPython in IronPython. Michael Foord > Michael > > _______________________________________________ > users mailing list > users@lists.ironpython.com > http://lists.ironpython.com/listinfo.cgi/users-ironpython.com > > _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com _______________________________________________ users mailing list users@lists.ironpython.com http://lists.ironpython.com/listinfo.cgi/users-ironpython.com