Thanks, I solved it. The problem depended on IDLE. If I invoke a file from command line with os.exec* everything works perfectly.- Best
-a- On 5 Jun 2005, at 01:07, Tiago Stürmer Daitx wrote: > Hello, > > When you use one of the os.exec*p functions python looks for the > specified file in the directories refered by os.environ['PATH']. If > and _only_ if your os.enviroment['PATH'] isn't set then it looks in > os.defpath - you can check this at > http://www.python.org/doc/current/lib/os-path.html#l2h-1557 > > So, my advice is that you first try printing your os.environ['PATH'] > to check wheter it includes the program that you are calling or not > (and then you will have to include it). In the case that it isn't set, > then check os.defpath. > > Also, when you use one of the functions os.exec that requires a path > variable to be passed (ie. the ones that doesn't have 'p' in their > names) the path can be relative or absolute, but it must include the > file name (and not only the dir where the file is). > > And for each one of these os.exec* functions the first argument will > always be used as the program "name" (argv[0]), so unless you a reason > to do otherwise, pass the same name as the file that you are calling. > > > Regards, > Tiago S Daitx > > On 6/4/05, andrea valle <[EMAIL PROTECTED]> wrote: >> Hi to all, >> I need to run a program from inside python (substantially, algorithmic >> batch processing). >> I'm on mac osx 10.3.8 with python 2.3 framework and macpython. >> >> Trying to use exec*, I checked references, Brueck & Tanner, and then >> grab this code from effbot: >> >>>>> program = "python" >>>>> def run(program, *args): >> os.execvp(program, (program,) + args) >> print "ok" >> >>>>> run("python", "/Users/apple/Desktop/prova.py") >> >> Traceback (most recent call last): >> File "<pyshell#50>", line 1, in -toplevel- >> run("python", "/Users/apple/Desktop/prova.py") >> File "<pyshell#49>", line 2, in run >> os.execvp(program, (program,) + args) >> File >> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >> python2.3/os.py", line 336, in execvp >> _execvpe(file, args) >> File >> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ >> python2.3/os.py", line 374, in _execvpe >> func(fullname, *argrest) >> OSError: [Errno 45] Operation not supported >> >> This OSError seems to be consistend with all exec family. What does it >> mean and how to use exec? >> >> I also tried with. os.system. It works if I invoke python, but it >> fails >> (in a way I don't know) when I invoke other programs. >> >> For example: >> command = "python /Users/apple/Desktop/test.py" >>>>> os.system(command) >> 0 >> (test.py write a string in a file. It works) >> >> But with lilypond or with latex I have no output (and in fact it >> doesn't give 0 as result): >> >>>>> command = "lilypond /Users/apple/Desktop/test.ly" >>>>> os.system(command) >> 32512 >>>>> command = "latex /Users/apple/Desktop/test.tex" >>>>> os.system(command) >> 32512 >> >> Any help is much appreciated >> >> Thanks a lot >> >> -a- >> >> -- >> http://mail.python.org/mailman/listinfo/python-list >> > > Andrea Valle Laboratorio multimediale "G. Quazza" Facoltà di Scienze della Formazione Università degli Studi di Torino [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
