Fix 3d plots in examples

[linpy.git] / linpy / tests / libhelper.py

diff --git a/linpy/tests/libhelper.py b/linpy/tests/libhelper.py
index 7cefbb2..be14067 100644 (file)
--- a/linpy/tests/libhelper.py
+++ b/linpy/tests/libhelper.py
@@ -16,11 +16,12 @@
 # along with LinPy.  If not, see <http://www.gnu.org/licenses/>.
 
 import functools
+import importlib
 import unittest
 
 try:
 
-    import sympy
+    importlib.import_module('sympy')
 
     def requires_sympy(func):
         @functools.wraps(func)