I use it in jupyter notebooks for structural engineering calcs. In a sense, it's definitely overkill, but it allows the following functionality: When you crea

I use it in jupyter notebooks for structural engineering calcs. In a sense, it's definitely overkill, but it allows the following functionality: When you create an expression, you have the ability to print it out in a nice readable format to verify it is correct and then without really ever altering that expression object, you can simultaneously perform simplifications and calculate final results. IMO there's less opportunity for errors like omitting an asterisk on a term meant to be an exponent, or incorrectly simplifying. Critically though, it allows me to hand my work over to someone who doesn't know python to check my work. I definitely can replicate a lot of that same functionality without sympy, but I have to perform the substitutions and simplifications by hand, and the printing of the expression by rendering in LaTex is always different from the calculation, so I have to hand verify that I calculated what I said I was going to.