Doctest to illustrate that caching of DirichletGroups works

sagemath · Apr 9, 2014 · ebe6a39 · ebe6a39
1 parent 55bf7be
commit ebe6a39
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/sage/modular/dirichlet.py b/src/sage/modular/dirichlet.py
@@ -1736,6 +1736,15 @@ class DirichletGroupFactory(UniqueFactory):
         Group of Dirichlet characters of modulus 60 over Maximal Order in Cyclotomic Field of order 4 and degree 2
         sage: parent(DirichletGroup(60, integral=True).gens()[2].values_on_gens()[2])
         Maximal Order in Cyclotomic Field of order 4 and degree 2
+
+    TESTS:
+
+    Dirichlet groups are cached, creating two groups with the same parameters
+    yields the same object::
+
+        sage: DirichletGroup(60) is DirichletGroup(60)
+        True
+
     """
     def create_key(self, modulus, base_ring=None, zeta=None, zeta_order=None, names=None, integral=False):
         """