Converting a python numeric expression to LaTeX

Question

I need to convert strings with valid python syntax such as:

\'1+2**(x+y)\'

and get the equivalent LaTeX:

$1+2^{x+y}$
         


        

Answer 1

You can use sympy.latex with eval:

s = "1+2**(x+y)"
sympy.latex(eval(s))   # prints '$1 + {2}^{x + y}$'

You still have to declare the variables as symbols, but if this is really a problem, it's much easier to write a parser to do this than to parse everything and generate the latex from scratch.