A reportlab user running via mod_python+django (Python 2.5.2 and mod_python 3.3.1) reports a strange intermittent error involving failure to read files which are known to be present.

After some debugging efforts we got this clearer error message


File "/usr/lib/python2.5/site-packages/reportlab/lib/utils.py", line 810, in dump
        f = open(self.fn,'wb')

    IOError: file() constructor not accessible in restricted mode

this is not the original error, but part of our efforts to debug; however, the original error was during an attempt to read a file so presumably open was not available there.

Googling the error indicates something to do with restricted environments/mod_python+threads.

I thought that restricted mode died ages ago.

Any ideas what could be causing this?
--
Robin Becker

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