Trac 19016: more robust doctest (see #19488)

sagemath · Oct 27, 2015 · c7b4f0e · c7b4f0e
1 parent 81012bc
commit c7b4f0e
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/src/sage/combinat/crystals/affine.py b/src/sage/combinat/crystals/affine.py
@@ -571,15 +571,15 @@ def __cmp__(self, other):
             sage: c = K(rows=[[2]])
             sage: cmp(b,c)
             -1
-            sage: cmp(b,1)
-            -1
             sage: cmp(b,b)
             0
-         """
-        if parent(self) is parent(other):
-            return cmp(self.value, other.value)
-        else:
-            return cmp(parent(self), parent(other))
+
+        If the parent are different, it uses comparison of the parents::
+
+            sage: cmp(b,1) == cmp(b.parent(), ZZ)
+            True
+        """
+        return cmp(parent(self), parent(other)) or cmp(self.value, other.value)
 
 AffineCrystalFromClassical.Element = AffineCrystalFromClassicalElement