Roger Upole wrote: > "Fredrik Lundh" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > > Steven Bethard wrote: > > > >> > Using the following snippet: > >> > p = > >> > subprocess.Popen(nmake,stderr=subprocess.PIPE,stdout=subprocess.PIPE, \ > >> > universal_newlines=True, bufsize=1) > >> > os.sys.stdout.writelines(p.stdout) > >> > os.sys.stdout.writelines(p.stderr) > >> > Works fine on the command line, but fails when called from within > >> > Visual Studio, with the following error: > >> > File "C:\Python24\lib\subprocess.py", line 549, in __init__ > >> > (p2cread, p2cwrite, > >> > File "C:\Python24\lib\subprocess.py", line 609, in _get_handles > >> > p2cread = self._make_inheritable(p2cread) > >> > File "C:\Python24\lib\subprocess.py", line 650, in _make_inheritable > >> > DUPLICATE_SAME_ACCESS) > >> > TypeError: an integer is required > >> > >> This looks like these known bugs: > >> http://python.org/sf/1124861 > >> http://python.org/sf/1126208 > >> > >> Try setting stderr to subprocess.PIPE. I think that was what worked for > >> me. (You might also try setting shell=True. That's what I currently > >> have in my code that didn't work before.) > > > > if someone wants to investigate, is seeing this problem, and have the win32 > > extensions on their machine, try changing this line in subprocess.py: > > > > if 0: # <-- change this to use pywin32 instead of the _subprocess driver > > > > to: > > > > if 1: # <-- change this to use _subprocess instead of the pywin32 driver > > > > and see if it either fixes the problem (not very likely) or gives you a > > better > > error message (very likely). > > > > </F> > > > > The error msg is only slightly better: > > error: (6, 'DuplicateHandle', 'The handle is invalid.') > > Basically, gui apps like VS don't have a console, so > GetStdHandle returns 0. _subprocess.GetStdHandle > returns None if the handle is 0, which gives the original > error. Pywin32 just returns the 0, so the process gets > one step further but still hits the above error. > > Subprocess.py should probably check the > result of GetStdHandle for None (or 0) > and throw a readable error that says something like > "No standard handle available, you must specify one" > > Roger > > > > > ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet > News==---- > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ > Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption =----
I gathered as much about why this happens in VS. A further question is why does n't os.popen fall in the same trap? Cheers, Uri -- http://mail.python.org/mailman/listinfo/python-list
