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

To build on tom10's answer you can define a dictionary that will generate symbols and use that when calling eval:

from collections import defaultdict
class GenerateSymbols(defaultdict):
  def __missing__(self, key):
    return sympy.Symbol(key)

Then if you use

sympy.latex(eval('1+2**(x+y)',GenerateSymbols()))

you shouldn't have to worry about pre-creating Symbols for the variables.