Python Programming prompts

This prompt is about generating a Python script that can create a simple loop for MIDI file manipulation. It aims to generate a code that is understandable to individuals having basic Python background but not necessarily familiar with MIDI file handling. The response should be in the form of step-by-step instructions starting from library imports to downloading it as a MIDI file. The generated code should be well commented and a brief explanation of the code functionality should be provided at the end.