Issue #17041: Fix doctesting when Python is configured with the

--without-doc-strings.

Lib/test/test_generators.py

@@ -383,7 +383,8 @@ From the Iterators list, about the types of these things.
 <class 'generator'>
 >>> [s for s in dir(i) if not s.startswith('_')]
 ['close', 'gi_code', 'gi_frame', 'gi_running', 'send', 'throw']
->>> print(i.__next__.__doc__)
+>>> from test.support import HAVE_DOCSTRINGS
+>>> print(i.__next__.__doc__ if HAVE_DOCSTRINGS else 'x.__next__() <==> next(x)')
 x.__next__() <==> next(x)
 >>> iter(i) is i
 True

Lib/test/test_genexps.py

@@ -221,7 +221,8 @@ Check that generator attributes are present
     >>> set(attr for attr in dir(g) if not attr.startswith('__')) >= expected
     True
 
-    >>> print(g.__next__.__doc__)
+    >>> from test.support import HAVE_DOCSTRINGS
+    >>> print(g.__next__.__doc__ if HAVE_DOCSTRINGS else 'x.__next__() <==> next(x)')
     x.__next__() <==> next(x)
     >>> import types
     >>> isinstance(g, types.GeneratorType)