I'd say go with Python - but knowing Ruby would be good if you plan on toying with Metasploit Modules. Python also has some weight in the industry right now. I look around for programming jobs sometimes (being a software major), and some folks actually want Python background. 

With Python, I've seen some beautiful stuff done involving networking (just take a look at some of the scripts in BackTrack for starters). Where I personally saw the real power of Python was in the Penetration Testing with BackTrack course, where the OffSec guys had developed a few python scripts which simulated Real-Live environments. To not be so vague about this, in the labs I often came across a couple of the machines I compromised having scripts that would be used to simulate a user checking his/her e-mail, visiting web pages, etc.

Also, hanging out on MaXe's site Intern0t and participating in their, 'Write a Program' challenges, I've noticed a lot of guys using Python and can get code done quicker and a lot more efficient!

If your going to look into networking, I'd say don't count Python out. The 'bad feeling' you get from Java is odd. Java has a lot of market value, it's portable across OS's and has great features in the java.net libraries that you could use to write some sweet tools.

Either route you go, your going to get closer in picking up on syntax from each language. Both languages have similar syntax so which ever one you favor you have nothing to lose when going back and learning the other.

-kris

I will go for Python then. I also tried to search a bit more on google and the support community and online content on Python is way bigger than for Ruby.

Just one question that has nothing to do with this. It used to be that C and C++ where faster than the higher programming languages. When coding a function that does brute forcing is it better to code this function in C or C++ still or is the speed neglectable compared with Python?

Try this for Python:

Desire to Pass on Love of Programming, Man Pens Book with Pre-Teen Son

Recommended python book for beginners, even if you're over 10 years of age.

Don

I've posted this in a few threads, including one linked above...

http://diveintopython3.org/


Edit:
Also, don't know where in the world you are, but amazon has the book on it's site for a nice price.

+1 for Python, It has solved me a lot of problems, and take a look a w3af, and scapy two examples of great tools made with Python

Really great post regarding Python vs Ruby, i was reading it and learned a lot.
Also had my questions answered regarding lanjuage.

Thanks guys.

If you want do python I have lots good resources on my site not sure if I can link to it but it save me typing them all out.

http://www.jamierougive.co.uk/tutorials.html

Take a look at thenewboston and there some under the python heading.