Good day.

I'm a beginner in Python. I have issues with my python launcher, I think. I recently installed a python extension on my VS Code. Usually, when l finish coding and l click on Terminal's 'Run Active File', a window would pop up with the executed code. But now, the window flashes on the screen without running the code.

I really need help on how to fix it because, it's stalling my learning process.

did you add python to your OS environment variables ?

spoilerx:
did you add python to your OS environment variables ?

not sure, cos l don't know how to do it

Knowing how and where to source for solutions would be your superpower as an intending programmer.

Take further queries to stackoverflow and google. There are ample of helpful resource awaiting you there.