fish8 · February 19, 2020 03:15
diff --git a/expr-latex.py b/expr-latex.py
 import sympy as sp

 from collections import defaultdict

 class GenerateSymbols(defaultdict):
    def __missing__(self, key):
        self[key] = sp.Symbol(key)
        return self[key]

 #global symbols in dictionary
 gl = GenerateSymbols()

 sp.latex(eval ('x1**2+alpha*y_i',gl)) #'\\alpha y_{i} + x_{1}^{2}'
	import sympy as sp

	from collections import defaultdict

	class GenerateSymbols(defaultdict):
	def __missing__(self, key):
	self[key] = sp.Symbol(key)
	return self[key]

	#global symbols in dictionary
	gl = GenerateSymbols()

	sp.latex(eval ('x1*2+alphay_i',gl)) #'\\alpha y_{i} + x_{1}^{2}'