Python has grown to be my preferred choice when it comes to programing. It is just so simple to import from its huge selection of modules and just build upon them to get things working. But at some point, when all the design phase is over, it just feels so slow when it has to work. In this case, I’m referring to numerical calculations. Indeed the numpy and scipy modules are of great help, letting all the numerical calculations to run faster in their C or Fortran coded engines.