copyfile avoiding overwrites and race conditions

Larry Bates wrote:

> I guess my approach would be different. To eliminate any race

> conditions, I would keep a small text file that always contained

> the next filename that is to be written. Something like:

> nextfiletowrite=/path/filename006.dat

> I would try to get a lock on this file, read it, extract next

> filename, increment the counter portion of the filename,

> write it back out and unlock it. Now I have the name of the

> file to write that is unique to my instance and I can write it

> without worrying about other processes.

Yes, that would work as well

but I get the feeling that

1) most people don't write to an automatically incrementing filename

2) the few who do don't sweat the race condition

Thanks for your reply

Manuel

http://python.itags.org/q_python_17164.html