On the latest version of raspbian a new app appeared. This app is a sense hat emulator. It is very cool and when you do from sense_hat import SenseHat do from sense_emu import SenseHat instead. For example, here is some Python code that I found here! Here is the code, but this code is for the emulator instead of the emulator for your web browser:
from sense_emu import SenseHat
sense = SenseHat()
red = (255, 0, 0)
sense.show_message(“How cool is this?”, text_colour = red)
Have fun experimenting!
Epic Chas Gamer 😎