From 28558ed2e67bec59124f1b89c448633097014fd1 Mon Sep 17 00:00:00 2001
From: Joseph Weston <joseph.weston08@gmail.com>
Date: Tue, 5 Dec 2017 17:16:14 +0100
Subject: [PATCH] fix check for sympy classes in sympify
As of version 1.1.1 Sympy does not include MutableDenseMatrix
in 'all_classes', so expressions containing such terms did not trigger
the warning in kwant.continuum.sympify when 'locals' are provided.
Closes #180.
---
kwant/continuum/_common.py | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kwant/continuum/_common.py b/kwant/continuum/_common.py
index 5fd97c6c..fa244939 100644
--- a/kwant/continuum/_common.py
+++ b/kwant/continuum/_common.py
@@ -25,6 +25,9 @@ import warnings
from .._common import reraise_warnings
+# TODO: remove when sympy correctly includes MutableDenseMatrix (lol).
+sympy_classes = set(sympy_classes) | {sympy.MutableDenseMatrix}
+
momentum_operators = sympy.symbols('k_x k_y k_z', commutative=False)
position_operators = sympy.symbols('x y z', commutative=False)
--
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