in reply to perl 5.8.4 threads

but my perl told me that I need 5.8.6 to make it works
Are you sure? What was the exact error message?
why perl do not have predefined thread as in python
Hmm, I'm guessing you mean your perl wasn't built with threads (perl -V:useithreads returns useithreads='undef';)? I think python can also be built without thread support. Just compile another one.

MJD says "you can't just make shit up and expect the computer to know what you mean, retardo!"
I run a Win32 PPM repository for perl 5.6.x and 5.8.x -- I take requests (README).
** The third rule of perl club is a statement of fact: pod is sexy.