This error occurs because you are trying to use module pytest-split, without importing it first.

To import the module, insert the following code line at the beginning of the program:

 import pytest-split

To import the module inside Google Colab, Kaggle/Jupyter Notebook or ipython environment, execute specified code line/cell before usage of the module, and retry afterwards.


Well, what's next?

Here you may find python documentation regarding imports

Also, python has style guide for coding, with a chapter about import statements - you should follow it in order to write good and readable code.

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