python 3.x - name '__file__' is not defined in jupyter notebook

Question

I want to run this repository https://github.com/werner-duvaud/muzero-general in jupyter notebook, but when I copied all the code and upload all the file in jupyter, I have got this error:

os.listdir(os.path.dirname(os.path.realpath(__file__)) + "/games")

Should I use the clone ...? could help me to solve this problem? Thank you

question from:https://stackoverflow.com/questions/65948654/name-file-is-not-defined-in-jupyter-notebook

Answer 1

The problem arise because of environment you are using. When you run python code in Jupyter notebook you are not running usual python environment - you are running it with iPython - interactive shell (version 7.12.0 is last currently). And it doesn't define hidden variable __file__ as mainstream python environment does - so it doesn't understand where to look for '/games' folder.

What you could do:

1. Run it in usual python environment with 'file' variable defined
2. Try placing your Jupyter notebook file in this project folder and using os.getcwd() instead of os.path.dirname(os.path.realpath(__file__)) or change path any other way that suits you.