[Zope] Calling External Method...

[Dieter Maurer]

Eric L. Walstad writes:
 > I am trying to invoke a C++ program from an external method.  Platform is
 > Linux.  The C++ program returns HTML.  Note that the Python function is
 > working properly from the Python command line; That is,
 > ExecCGI.xCGI("./websim") outputs all the expected html.  I have placed the
 > C++ program in the same folder as the ExecCGI module.  The C++ program works
 > from apache:  here's an example of the program's output, which is what I'm
 > trying to get into Zope:
 > 
 > http://63.203.42.146/cgi-bin/websim
 > 
 > 
 > ExecCGI module:
 > import sys, os, string
 > 
 > def xCGI( cmdLine ):
 >     """
 >     Run an external command and return its standard output as a string.
 >     """
 >     f = os.popen( cmdLine )
 >     lines = f.readlines()
 >     status = f.close()
 >     if status:
 >         raise "CGI returned error: %d" % status[1]
 >     return string.join( lines )
 > 
You have two problems here!

First, your program returns a non-zero exit status.
Second: "f.close()" returns a simple integer, not a sequence
        that may be indexed.
	Remove the "[1]" from status and you should see
	the nonzero exit status.

Dieter