fixing the doctests

Author: fchapoton

src/sage/geometry/polyhedron/parent.py

@@ -2,12 +2,12 @@
 Parents for Polyhedra
 """
 
-#*****************************************************************************
+# ****************************************************************************
 #       Copyright (C) 2014 Volker Braun <[email protected]>
 #
 #  Distributed under the terms of the GNU General Public License (GPL)
-#                  http://www.gnu.org/licenses/
-#******************************************************************************
+#                  https://www.gnu.org/licenses/
+# *****************************************************************************
 
 from sage.structure.parent import Parent
 from sage.structure.element import get_coercion_model
@@ -400,7 +400,7 @@ def some_elements(self):
         points = []
         R = self.base_ring()
         for i in range(self.ambient_dim() + 5):
-            points.append([R(i * j**2) for j in range(self.ambient_dim())])
+            points.append([R(i * j ^ 2) for j in range(self.ambient_dim())])
         return [
             self.element_class(self, [points[0:self.ambient_dim() + 1], [], []], None),
             self.element_class(self, [points[0:1], points[1:self.ambient_dim() + 1], []], None),
@@ -1212,9 +1212,11 @@ def _element_constructor_polyhedron(self, polyhedron, **kwds):
         else:
             return Polyhedra_base._element_constructor_polyhedron(self, polyhedron, **kwds)
 
+
 class Polyhedra_ZZ_normaliz(Polyhedra_base):
     Element = Polyhedron_ZZ_normaliz
 
+
 class Polyhedra_QQ_ppl(Polyhedra_base):
     Element = Polyhedron_QQ_ppl
 
@@ -1244,27 +1246,35 @@ def _element_constructor_polyhedron(self, polyhedron, **kwds):
         else:
             return Polyhedra_base._element_constructor_polyhedron(self, polyhedron, **kwds)
 
+
 class Polyhedra_QQ_normaliz(Polyhedra_base):
     Element = Polyhedron_QQ_normaliz
 
+
 class Polyhedra_QQ_cdd(Polyhedra_base):
     Element = Polyhedron_QQ_cdd
 
+
 class Polyhedra_RDF_cdd(Polyhedra_base):
     Element = Polyhedron_RDF_cdd
 
+
 class Polyhedra_normaliz(Polyhedra_base):
     Element = Polyhedron_normaliz
 
+
 class Polyhedra_polymake(Polyhedra_base):
     Element = Polyhedron_polymake
 
+
 class Polyhedra_field(Polyhedra_base):
     Element = Polyhedron_field
 
+
 class Polyhedra_number_field(Polyhedra_base):
     Element = Polyhedron_number_field
 
+
 @cached_function
 def does_backend_handle_base_ring(base_ring, backend):
     r"""

src/sage/modular/btquotients/btquotient.py

@@ -412,7 +412,7 @@ class BruhatTitsTree(SageObject, UniqueRepresentation):
         sage: T = BruhatTitsTree(4)
         Traceback (most recent call last):
         ...
-        ValueError: Input (4) must be prime
+        ValueError: input (4) must be prime
 
     AUTHORS: