Add a few tests with universe and empty

[linpy.git] / examples / nsad2010.py

diff --git a/examples/nsad2010.py b/examples/nsad2010.py
index 14c984c..e2cacc7 100755 (executable)
--- a/examples/nsad2010.py
+++ b/examples/nsad2010.py
@@ -9,7 +9,6 @@ def affine_derivative_closure(T, x0s):
     k = Symbol('k')
 
     for x in T.symbols:
-        x = Symbol(x)
         assert x in x0s + xs
     for dx in dxs:
         assert dx.name not in T.symbols