I installed NppExc to run python

My guess without seeing any of your installation or how you did the things you say you did is that you need to updated your NppExec script to use the python.exe that is in the virtual environment; otherwise, you are just running the system Python, where presumably, you do not have pandas installed.

Cheers.

There are others here who use a lot more command-line python than I do. And I don’t use the virtual environments, though I tried them out a few years ago, so I’ve got a vague memory of them. I seem to remember that the virtual-env settings apply only to whatever shell you set the virtual environment from… so since Notepad++ is not inside that shell, it won’t know which environment you’ve chosen in that shell. (Well, maybe you could close Notepad++, run the shell and set the virtual environment for that shell, then launch Notepad++ from that shell… at that point, I think it would inherit the virtual environment from the parent shell.)

With those vague memories, if you don’t launch Notepad++ from the special shell, I think it means that you would have to do the call to choose your virtual environment from inside the NppExec script.

But I could be completely misremembering how the virtual environments work, in which case you can ignore me, and hopefully someone more qualified will answer soon. (Even if I’m right, getting a more-qualified confirmation would be appreciated… though if you see my reply before anyone else answers, you could at least give it a try.)