command-line batch-mode showing input along with output

[asciisi...@gmail.com]

Maxima and Maple can batch-execute a text file of commands, showing input interspersed with output:

$ maxima -b t.mac

Maxima 5.44.0 http://maxima.sourceforge.net

using Lisp CLISP 2.49+ (2010-07-17)

Distributed under the GNU Public License. See the file COPYING.

Dedicated to the memory of William Schelter.

The function bug_report() provides bug reporting information.

(%i1) batch("t.mac")

read and interpret /t.mac

(%i2) 1+2

(%o2)                                  3

(%i3) 2+3

(%o3)                                  5

(%o4)                /t.mac

$

This is often my preferred method of interacting. Mathematica can't. Sympy can't as far as I know because Python doesn't work like that in batch mode from the command line, as far as I know. For Sympy, to get the effect I want, I have to enter the input lines as individual cells in a Jupyter notebook. If I then need to copy paste the cells to another notebook, I can't, because JupyterLab lacks that functionality.

[Aaron Meurer]

You can put code in a .py file and use %run in IPython or the notebook
to run it. Or in pure Python you can add it to a function, import the
file, and run the function (using a function for this case is
recommended because while Python's 'import' will run the code in the
body of the file, it will only import a module once and cache it after
that).

Aaron Meurer

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[Oscar]

Maybe there could be an option to isympy to do something like this. Give a file t.py like

# t.py
1 + 1
2 + 2

I can do this:

$ isympy -q < t.py

In [1]: Out[1]: 2

In [2]: Out[2]: 4

In [3]: Do you really want to exit ([y]/n)? 

Exiting ...

That almost works but it doesn't show the input.

You can make a simple Python script to do this e.g.:

# run.py
from sympy import *
import sys
filename, = sys.argv[1:]
with open(filename) as inputfile:
    for n, line in enumerate(map(str.strip, inputfile)):
        print('(i%d): %s' % (n, line))
        print('(o%d): %s' % (n, eval(line)))

With that you have:

$ python run.py t.py
(i0): 1 + 1
(o0): 2
(i1): 2 + 2
(o1): 4

--

Oscar