sage.rings: Fix # optional

Author: Matthias Koeppe

src/sage/rings/function_field/function_field.py

@@ -37,7 +37,7 @@
 We next make an extension of the above function field, illustrating
 that arithmetic with a tower of three fields is fully supported::
 
-    sage: S.<t> = L[]                                                                   # optional - sage.rings.finite_rings
+    sage: S.<t> = L[]                                                                   # optional - sage.rings.finite_rings sage.rings.function_field
     sage: M.<t> = L.extension(t^2 - x*y)                                                # optional - sage.rings.finite_rings sage.rings.function_field
     sage: M                                                                             # optional - sage.rings.finite_rings sage.rings.function_field
     Function field in t defined by t^2 + 4*x*y
@@ -120,8 +120,8 @@
     sage: TestSuite(J).run()                                                            # optional - sage.rings.finite_rings
     sage: TestSuite(K).run(max_runs=256)   # long time (10s)                            # optional - sage.rings.number_field
     sage: TestSuite(L).run(max_runs=8)     # long time (25s)                            # optional - sage.rings.function_field sage.rings.number_field
-    sage: TestSuite(M).run(max_runs=8)     # long time (35s)
-    sage: TestSuite(N).run(max_runs=8, skip = '_test_derivation')    # long time (15s)
+    sage: TestSuite(M).run(max_runs=8)     # long time (35s)                            # optional - sage.rings.finite_rings sage.rings.function_field
+    sage: TestSuite(N).run(max_runs=8, skip='_test_derivation')      # long time (15s)  # optional - sage.rings.finite_rings
     sage: TestSuite(O).run()                                                            # optional - sage.rings.function_field sage.rings.number_field
     sage: TestSuite(R).run()
     sage: TestSuite(S).run()               # long time (4s)                             # optional - sage.rings.finite_rings sage.rings.function_field

src/sage/rings/function_field/valuation.py

@@ -107,7 +107,7 @@
     sage: v = K.valuation(x^2 + 1)
     sage: L.<x> = FunctionField(GaussianIntegers().fraction_field())
     sage: ws = v.extensions(L)                                                          # optional - sage.rings.function_field
-    sage: for w in ws: TestSuite(w).run(max_runs=100) # long time
+    sage: for w in ws: TestSuite(w).run(max_runs=100)  # long time                      # optional - sage.rings.function_field
 
 Run test suite for a finite place with residual degree and ramification::