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(python2.1-lib.info)Testing your CGI script

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Testing your CGI script
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Unfortunately, a CGI script will generally not run when you try it from
the command line, and a script that works perfectly from the command
line may fail mysteriously when run from the server.  There's one
reason why you should still test your script from the command line: if
it contains a syntax error, the Python interpreter won't execute it at
all, and the HTTP server will most likely send a cryptic error to the
client.

Assuming your script has no syntax errors, yet it does not work, you
have no choice but to read the next section.