--- /dev/null
+# Copyright 2014 MINES ParisTech
+#
+# This file is part of LinPy.
+#
+# LinPy is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# LinPy is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LinPy. If not, see <http://www.gnu.org/licenses/>.
+
+import functools
+import unittest
+
+try:
+
+ import sympy
+
+ def requires_sympy(func):
+ @functools.wraps(func)
+ def wrapper(self):
+ return func(self)
+ return wrapper
+
+except ImportError:
+
+ def requires_sympy(func):
+ @functools.wraps(func)
+ def wrapper(self):
+ raise unittest.SkipTest('SymPy is not available')
+ return wrapper