Want a warm-up for PyCon 2014 in Montréal? This is your chance to get into the right mood. Start with this tutorial for a through workout of your brain cells.
Python is an interpreted language; Python source code is translate into portable byte code. This concept in combination with other design principles of Python makes many of advantages as compared to other languages possible. As a drawback the execution speed my be considerably slower for certain kinds of applications than with compiled languages. Optimization can often increase performance of Python programs substantially.