Ugh this is a gish gallop of broken straw man analogies. Being able to select and evaluate a single line in a notebook is nothing like adding wings to a car. Fu

Ugh this is a gish gallop of broken straw man analogies. Being able to select and evaluate a single line in a notebook is nothing like adding wings to a car. Fundamentally, selecting a line to evaluate is no different from typing that line again. It’s a shortcut and nothing more, the interaction is still read-eval-print. Note REPL doesn’t even refer to where the input comes from, the point is simply that it handles your input, processes it, displays the result, and then waits for you for more input. This is as opposed to executing a file where the interpreter exits once the execution is completed, and the return value is not automatically printed. Jupyter Notebook absolutely is a REPL, see my sibling comment above for the WP link describing it as such. It waits for input, then evals the input, the prints the return value, and then loops.