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(python2.1-lib.info)Common problems and solutions

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Common problems and solutions
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   * Most HTTP servers buffer the output from CGI scripts until the
     script is completed.  This means that it is not possible to
     display a progress report on the client's display while the script
     is running.

   * Check the installation instructions above.

   * Check the HTTP server's log files.  (`tail -f logfile' in a
     separate window may be useful!)

   * Always check a script for syntax errors first, by doing something
     like `python script.py'.

   * When using any of the debugging techniques, don't forget to add
     `import sys' to the top of the script.

   * When invoking external programs, make sure they can be found.
     Usually, this means using absolute path names -- `PATH' is usually
     not set to a very useful value in a CGI script.

   * When reading or writing external files, make sure they can be read
     or written by every user on the system.

   * Don't try to give a CGI script a set-uid mode.  This doesn't work
     on most systems, and is a security liability as well.