uniqueness of temporary files generated by tempfile

[Catherine Moroney]

Are the temporary filenames generated by the tempfile module
guaranteed to be unique?

I have a need to generate temporary files within an application,
and I will have many instances of this application running as a
sub-process (so I can submit them to a batch queue). Is there
any danger of my different sub-processes accidentally generating
the same filename, or does tempfile check for the existence of
a similarly-named file before generating a filename?

What's the recommended way of generating temporary filenames
that are guaranteed to be unique even with multiple processes
running simultaneously?

Catherine

 

[Emile van Sebille]

Are the temporary filenames generated by the tempfile module
guaranteed to be unique?

I suspect this answers your question...

Emile

Help on module tempfile:

NAME
tempfile - Temporary files.

FILE
c:\python25\lib\tempfile.py

DESCRIPTION
This module provides generic, low- and high-level interfaces for
creating temporary files and directories. The interfaces listed
as "safe" just below can be used without fear of race conditions.
Those listed as "unsafe" cannot, and are provided for backward
compatibility only.