From af4d7b569c29a1b22ca991d3a2172e1e54933758 Mon Sep 17 00:00:00 2001
From: Nao Pross <np@0hm.ch>
Date: Wed, 17 Apr 2024 18:43:07 +0200
Subject: Minor changes

---
 polymatrix/expression/to.py          | 4 ++++
 polymatrix/expressionstate/mixins.py | 2 --
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/polymatrix/expression/to.py b/polymatrix/expression/to.py
index c334a9e..0cea1d9 100644
--- a/polymatrix/expression/to.py
+++ b/polymatrix/expression/to.py
@@ -47,6 +47,10 @@ def to_constant(
 def to_sympy(
     expr: Expression,
 ) -> StateMonadMixin[ExpressionState, sympy.Expr]:
+
+    # TODO: fix this function with new expression state
+    raise NotImplementedError("Broken because FromTupleExpr was removed")
+
     def func(state: ExpressionState):
         state, underlying = expr.apply(state)
 
diff --git a/polymatrix/expressionstate/mixins.py b/polymatrix/expressionstate/mixins.py
index 99b2cb1..9c30475 100644
--- a/polymatrix/expressionstate/mixins.py
+++ b/polymatrix/expressionstate/mixins.py
@@ -20,8 +20,6 @@ class IndexRange(NamedTuple):
 class ExpressionStateMixin(
     StateCacheMixin,
 ):
-    # -- New API --
-
     @property
     @abstractmethod
     def n_variables(self) -> int:
-- 
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