[Tutor] CGI Tutorial
dyoo at hkn.eecs.berkeley.edu
Tue Jun 28 00:51:24 CEST 2005
On Mon, 27 Jun 2005, Gooch, John wrote:
> Are there any tutorials on the Python CGI module? I think I found enough
> fragments to get form data, but I need a way for the Python script to
> tell whether it is being run in a web server environment or from the
> command line.
> What I am thinking is testing for an environment variable
> that only exists in the CGI environment, but not in a command shell.
According to the CGI specification here:
the program should expect to see a few environmental variables. One
popular environmental variable that's used to detect if we're running off
the command shell is 'REQUEST_METHOD'. (Perl's CGI.pm uses REQUEST_METHOD
to figure out if a cgi program is being run from the command line or not.)
So something like:
"""Returns True if we're running as a CGI."""
acceptable = ('POST', 'GET', 'HEAD')
return os.environ.get('REQUEST_METHOD', '').upper() in acceptable
might do the trick.
Best of wishes!
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