That is true, but I have found if I am doing calculations that need something like the full math library of python, it's not a one-off calculation, and I am typically on octave anyway.
In any case, since I have emacs open all time, I usually do
M-x calc
for one-off calculations.
Re:Integrated command line math
by merlincorey on Tuesday July 23, 2013 @04:42PM
(#6092757)
I just evaluate random lisp in my buffers, sometimes evaluating it to output directly there. Ah emacs!
I love this idea, I have always found math in the command line to be clunky.