What is IPython and Jupyter notebook ?

Answer 1

IPython stands for Interactive Python. It is an IDE which allows you to write and execute parts od your scripts at whichever order, retaining all the variables and data on the go.

Jupyter Notebook builds on that and is an excellent browser tool/environment for Python kernels. (as well as R and Julia, od you wants to - that's why the name)

You can find more information here:
https://jupyter-notebook-beginner-guide.readthedocs.io/en/latest/what_is_jupyter.html

Answer 2

As Kuba Siekierzyński has said previously that it stands for interactive python and it is an IDE. But I am adding a little bit more about jupyter notebook, that jupyter notebook is a very smooth IDE that works perfectly with low-end computers it's very easy to use in comparison to other python IDEs.