[Tkinter] how do I enter code into python

[metulburr]

I can't find any way of adding the path now, is it possible without unloading and reloading the python software?

Yes but its more complicated and if you mess it up you can mess up windows calls. I would suggest to reinstall python and tick everything pertaining to PATH. https://www.pythoncentral.io/add-python-...l-command/

I would also change to a custom python install path that is shorter than the default appdata one

Python will always work in its directory as you are directly calling python from that directory.

As for your traceback

  pip install pyserial

But thats not going to work if you dont have python its path var. Pip would be in the scripts folder....but i would first fix your python to be in the PATH instead