Fix error message

[linpy.git] / examples / tesseract.py

diff --git a/examples/tesseract.py b/examples/tesseract.py
index 383d7bd..d692e37 100755 (executable)
--- a/examples/tesseract.py
+++ b/examples/tesseract.py
@@ -5,19 +5,22 @@
 # the cube consists of 6 square faces, the hypersurface of the tesseract
 # consists of 8 cubical cells.
 
-from linpy import *
+from linpy import Le, symbols
 
 
 x, y, z, t = symbols('x y z t')
 
 tesseract = Le(0, x, 1) & Le(0, y, 1) & Le(0, z, 1) & Le(0, t, 1)
 
+
 def faces(polyhedron):
     for points in polyhedron.faces():
         face = points[0].aspolyhedron()
-        face = face.convex_union(*[point.aspolyhedron() for point in points[1:]])
+        face = face.convex_union(*[point.aspolyhedron()
+                                   for point in points[1:]])
         yield face
 
+
 if __name__ == '__main__':
     print('Faces of tesseract\n\n  {}\n\nare:\n'.format(tesseract))
     for face in faces(tesseract):