title: Where do I put utility functions in my Python project?
body: <p>I need to create a function to rotate a given matrix (list of lists) clockwise, and I need to use it in my <code>Table</code> class. Where should I put this utility function (called <code>rotateMatrixClockwise</code>) so I can call it easily from within a function in my <code>Table</code> class?</p>