src/sage/repl/ipython_tests.py: Mark R interface tests # optional - rpy2

Author: Matthias Koeppe

src/sage/repl/ipython_tests.py

@@ -46,9 +46,9 @@
 
 Next, test the ``pinfo`` magic for ``R`` interface code, see :trac:`26906`::
 
-    sage: from sage.repl.interpreter import get_test_shell
-    sage: shell = get_test_shell()
-    sage: shell.run_cell(u'%pinfo r.lm')
+    sage: from sage.repl.interpreter import get_test_shell   # optional - rpy2
+    sage: shell = get_test_shell()                           # optional - rpy2
+    sage: shell.run_cell(u'%pinfo r.lm')                     # optional - rpy2
     Signature:       r.lm(...*args, **kwds)
     ...
     String form:     lm
@@ -122,9 +122,9 @@ def __cinit__(self):
 
 Next, test the ``pinfo2`` magic for ``R`` interface code, see :trac:`26906`::
 
-    sage: from sage.repl.interpreter import get_test_shell
-    sage: shell = get_test_shell()
-    sage: shell.run_cell(u'%pinfo2 r.lm')
+    sage: from sage.repl.interpreter import get_test_shell   # optional - rpy2
+    sage: shell = get_test_shell()                           # optional - rpy2
+    sage: shell.run_cell(u'%pinfo2 r.lm')                    # optional - rpy2
     Signature:       r.lm(...*args, **kwds)
     ...
     String form:     lm