Python:<p>- useful glue-language<p>- prominent C API.<p>- It handles web applications, scientific applications, shell-scripting, data-processing.<p>- It's installed on virtually every OS X and Linux/BSD machine.<p>- job market is active and work tends to pay well.<p>- The contrib (open source, permissively licensed libraries) are robust, abundant and well-documented.<p>- The standard library is also.<p>- Python 3 unicode support + python 2.7 support via unicode_literals<p>- Support for deployment to Google's cloud, Amazon, Heroku<p>- Many prominent tech companies (facebook, google, dropbox) sponsor and release open source applications for python.<p>- Faster implementations such as Pypy (a speedier, pure-python implementation) and Pyston (LLVM implementation) are under active development<p>- REPL via bpython, ipython, ptpython is great<p>- Mature language (around since the 90's)<p>I could go on and on. You can't really miss with python, it's a "safe language" from a job perspective, but also superb should own your desires go to freelance, your own startup, etc.