[Python-Dev] os.access versus os.exist

Greg Ewing greg.ewing at canterbury.ac.nz
Tue Nov 16 02:50:53 CET 2004


Robert Brewer wrote:
> It would be awfully nice (on posix platforms, for my use-case) to find
> out whether a file is inaccessible due to permission restrictions, or
> due to non-existence.

On a posix system, you should be able to find out by
checking the error code from the exception. That would
be better than making a separate call, since it would
avoid any possible race conditions. Don't look before
you leap, etc...

-- 
Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
Christchurch, New Zealand	   | wholly-owned subsidiary of USA Inc.  |
greg at cosc.canterbury.ac.nz	   +--------------------------------------+



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