Python vs. Ruby

[Fred]

Hello all.

I know Python and have come to love it very much. Nearly all of my 
scripting tasks with large databases are written in it.

My question is this -- what are the qualitative differences between 
Python and Ruby? Does Ruby has any strengths, either in the language 
itself or its available libraries, that are better than Python? Or are 
they pretty much even?

Also, on the issue of threading -- does Ruby have better support for 
threading than Python? Or are they pretty much equal?

Thanks in advance for all of your responses.

-Fred