src/sage/structure: sage -fixdoctests --only-tags

Author: Matthias Koeppe

src/sage/structure/coerce.pyx

@@ -1871,10 +1871,10 @@ cdef class CoercionModel:
         Check that :trac:`18221` is fixed::
 
             sage: # needs sage.combinat sage.modules
-            sage: F.<x> = FreeAlgebra(QQ)                                               # needs sage.combinat sage.modules
-            sage: x / 2                                                                 # needs sage.combinat sage.modules
+            sage: F.<x> = FreeAlgebra(QQ)
+            sage: x / 2
             1/2*x
-            sage: cm.discover_action(F, ZZ, operator.truediv)                           # needs sage.combinat sage.modules
+            sage: cm.discover_action(F, ZZ, operator.truediv)
             Right inverse action by Rational Field on
              Free Algebra on 1 generators (x,) over Rational Field
              with precomposition on right by Natural morphism:

src/sage/structure/factorization.py

@@ -1201,11 +1201,12 @@ def __call__(self, *args, **kwds):
 
         EXAMPLES::
 
-            sage: R.<x,y> = FreeAlgebra(QQ, 2)                                          # optional - sage.combinat sage.modules
-            sage: F = Factorization([(x,3), (y, 2), (x,1)])                             # optional - sage.combinat sage.modules
-            sage: F(x=4)                                                                # optional - sage.combinat sage.modules
+            sage: # needs sage.combinat sage.modules
+            sage: R.<x,y> = FreeAlgebra(QQ, 2)
+            sage: F = Factorization([(x,3), (y, 2), (x,1)])
+            sage: F(x=4)
             (1) * 4^3 * y^2 * 4
-            sage: F.subs({y:2})                                                         # optional - sage.combinat sage.modules
+            sage: F.subs({y:2})
             x^3 * 2^2 * x
 
             sage: R.<x,y> = PolynomialRing(QQ, 2)

src/sage/structure/sage_object.pyx

@@ -95,9 +95,9 @@ cdef class SageObject:
         Real numbers are not Python classes, so rename is not supported::
 
             sage: a = 3.14
-            sage: type(a)                                                               # optional - sage.rings.real_mpfr
+            sage: type(a)                                                               # needs sage.rings.real_mpfr
             <... 'sage.rings.real_mpfr.RealLiteral'>
-            sage: a.rename('pi')                                                        # optional - sage.rings.real_mpfr
+            sage: a.rename('pi')                                                        # needs sage.rings.real_mpfr
             Traceback (most recent call last):
             ...
             NotImplementedError: object does not support renaming: 3.14000000000000