Tal Einat <taleinat+pyt...@gmail.com> added the comment:
For a wider context, besides the default REPL, I also consider two other
leading REPLs: ipython and Jupyter notebooks. They both also have clear
separation of outputs from inputs, though in different ways than the standard
REPL.
ipython retains similar behavior to the standard REPL in this regard, replacing
the '>>>' prompts with "In [1]:", "In [2]:" etc. It also prefixes outputs of
statements with e.g. "Out[2]:", but not outputs written to stdout. And it has
additional vertical spacing between commands.
Here is a short example session:
Python 3.8.5 (default, Jan 27 2021, 15:41:15)
Type 'copyright', 'credits' or 'license' for more information
IPython 7.18.1 -- An enhanced Interactive Python. Type '?' for help.
In [1]: if True:
...: print('Foo')
...:
Foo
In [2]: beatles = ['john', 'paul', 'ringo', 'george']
In [3]: [name.capitalize() for name in beatles]
Out[3]: ['John', 'Paul', 'Ringo', 'George']
Jupyter notebooks are a different beast since their interface is browser-based
rather than terminal-based, and they take more advantage of non-text graphical
elements than IDLE's shell. Inputs are done in "cells", which may contain
multiple statements, and each cell its own output. These cells are clearly
visually separate from each other. I've attached a screenshot of a similar
Python 3 session in a Jupyter notebook for comparison.
Indeed, both the ipython REPL and Jupyter notebooks go further than the default
REPL in differentiating outputs from inputs, using different methods.
----------
Added file: https://bugs.python.org/file50066/Jupyter Notebook Example
Session.png
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<https://bugs.python.org/issue37903>
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