SciPy is open-source software for mathematics, science, and engineering. It is also the name of a very popular conference on scientific programming with Python. SciPy is built on a core called NumPy which provides fast N-dimensional array manipulation. Together, they run on all popular operating systems, are quick to install, and are free of charge. SciPy is easy to use, but powerful enough to be depended upon by some of the world's leading scientists and engineers. If you need to manipulate numbers on a computer and display or publish the results, give SciPy a try!