From 5a2383648652b031ff500fee8d219cd723fa94d4 Mon Sep 17 00:00:00 2001
From: SlaviXG <slavixg409@gmail.com>
Date: Sun, 3 Dec 2023 01:51:46 +0200
Subject: [PATCH] Fixed SOS __getitem__ assertion

---
 src/SumOfSquares/SoS.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SumOfSquares/SoS.py b/src/SumOfSquares/SoS.py
index 89ebb98..caaf6dd 100644
--- a/src/SumOfSquares/SoS.py
+++ b/src/SumOfSquares/SoS.py
@@ -25,7 +25,7 @@ def __init__(self, *args, **kwargs):
         self._pexpect_count = 0
 
     def __getitem__(self, sym):
-        assert isinstance(sym, sp.Symbol), f'{s} must be a sympy symbol!'
+        assert isinstance(sym, sp.Symbol), f'{sym} must be a sympy symbol!'
         return self.sym_to_var(sym)
 
     def sym_to_var(self, sym):