Mensanator wrote: > On Jun 18, 10:33�pm, "bruce" <[EMAIL PROTECTED]> wrote: >> hi... >> >> can someone point me to where/how i would go about calling a ruby app from a >> python app, and having the python app being able to get a returned value >> from the ruby script. >> >> something like >> >> test.py >> �a = os.exec(testruby.rb) >> >> testruby.py >> �foo = 9 >> �return foo >> >> i know this doesn't work... but i've been searching for hours on this with >> no luck.... (and yeah, i'm relatively new to both ruby/python!!) >> >> thanks > > Well, I don't know anything about Ruby, but here's > how I do it for C programs (compiled to .exe that > write to stdout). > > > import os > factor_program = 'factor! -d200 ' # factor!.exe from MIRACL > > n = > '50818429800343305993022114330311033271249313957919046352679206262204589342623811236647989889145173098650749' > > # call external program and capture stdout > the_output = os.popen(factor_program+n).readlines() > > print 'n: %s' % n > for i in the_output: > print i,
<snip output> You're supposed to use the subprocess module. In this case, something like: import subprocess factor_program = ['factor!', '-d200'] ... p = subprocess.Popen(factor_program + [n], stdout=subprocess.PIPE) p.wait() # wait for it to finish; not sure how necessary it is the_output = p.stdout.readlines() See subprocess's documentation [1], which includes guides on replacing os.popen* and other functions with it. [1] <http://docs.python.org/lib/module-subprocess.html> -- -- http://mail.python.org/mailman/listinfo/python-list
