cone/cone.py: use generator expressions instead of lists.

diff --git a/mjo/cone/cone.py b/mjo/cone/cone.py
index e5075261c3f5738f4b69d76ac5fa13d98422731f..b7456e21abc170d6479f9010a2b7ccdd5ab9438d 100644 (file)
--- a/mjo/cone/cone.py
+++ b/mjo/cone/cone.py
@@ -3,21 +3,21 @@ from sage.all import *
 def LL_cone(K):
     gens = K.lyapunov_like_basis()
     L = ToricLattice(K.lattice_dim()**2)
-    return Cone([ g.list() for g in gens ], lattice=L, check=False)
+    return Cone(( g.list() for g in gens ), lattice=L, check=False)
 
 def Sigma_cone(K):
     gens = K.cross_positive_operators_gens()
     L = ToricLattice(K.lattice_dim()**2)
-    return Cone([ g.list() for g in gens ], lattice=L, check=False)
+    return Cone(( g.list() for g in gens ), lattice=L, check=False)
 
 def Z_cone(K):
     gens = K.Z_operators_gens()
     L = ToricLattice(K.lattice_dim()**2)
-    return Cone([ g.list() for g in gens ], lattice=L, check=False)
+    return Cone(( g.list() for g in gens ), lattice=L, check=False)
 
 def pi_cone(K1, K2=None):
     if K2 is None:
         K2 = K1
     gens = K1.positive_operators_gens(K2)
     L = ToricLattice(K1.lattice_dim()*K2.lattice_dim())
-    return Cone([ g.list() for g in gens ], lattice=L, check=False)
+    return Cone(( g.list() for g in gens ), lattice=L, check=False)