Alan, I did search Google for this problem (not enough, thou). In fact, I found some kind of solution (by myself, not that much on Google), but it is not really satisfactory.
I have used win32 pipes to do so (win32api.CreatePipe). I can redirect stdout/stderr to it from my python code (even redirecting the stdout/stderr from my C lib). But I still have a problem with this solution (well, 2): - it is *much* more complicated than any solution available on Unix like systems (not really a problem, but), - it not synchronous at all. And I'd like it to be so (or almost so). David yaipa wrote: > David, > > Googling comp.lang.python /w this string "stderr win32" yielded 109 > results. > So I think if you poke around a bit you will find your answer in the > archives. > > Sorry for no direct help tonight... > > Cheers, > > --Alan > David Douard wrote: >> Hi everybody, >> >> let me explain by problem: >> I am working on an application which consists in a C++ dll (numeric >> computations) and a Python IHM (Python/Tk), which must run under > Linux and >> win32. My problem is the C++ lib does write stuffs on its stdout, and > I >> would like to print those messages in a Tk frame. When I run the >> computation, it has it's own thread. >> >> So my question is : how van I redirect the dll's stdout to something > I can >> retrieve in Python (pipe, socket,...)? >> >> I can do it easily under Linux. I made tests with a socket which just > works >> fine. In the threaded function (that will do the heavy computation), > I >> write: >> >> import os, sys >> from socket import * >> s=socket(AF_UNIX, SOCK_STREAM) >> s.connect(...) >> os.dup2(sys.__stdout__.fileno(), s.fileno()) >> very_intensive_function(many_parameters) >> s.close() >> >> That's OK under Linux, but does not work under win32 (even if I use > an INET >> localhost socket), cause I cannot do the os.dup2 trick (Windows does > not >> want to consider a socket as a file! What a shity system!). >> >> So my question is : is there a simple solution ? I have tested > different >> solutions. I am trying hacks with pipes created with the win32api. > But I >> have not yet managed this simple operation. >> >> Note that I have no access to the dll source code, so I cannot modify > it so >> it uses a named pipe (for example) as message output pipe instead os >> stdout... >> >> Thanks, >> David -- http://mail.python.org/mailman/listinfo/python-list
