bpo-42416: Use inspect.getdoc for IDLE calltips (GH-23416)

Inspect.getdoc(ob) sometimes gets docstrings when ob.__doc__ is None.

1 files changed, 7 insertions, 2 deletions

diff --git a/Lib/idlelib/idle_test/test_calltip.py b/Lib/idlelib/idle_test/test_calltip.py
index 489b689..a76829f 100644
--- a/Lib/idlelib/idle_test/test_calltip.py
+++ b/Lib/idlelib/idle_test/test_calltip.py
@@ -99,7 +99,12 @@ non-overlapping occurrences o...''')
 (width=70, initial_indent='', subsequent_indent='', expand_tabs=True,
     replace_whitespace=True, fix_sentence_endings=False, break_long_words=True,
     drop_whitespace=True, break_on_hyphens=True, tabsize=8, *, max_lines=None,
-    placeholder=' [...]')''')
+    placeholder=' [...]')
+Object for wrapping/filling text.  The public interface consists of
+the wrap() and fill() methods; the other methods are just there for
+subclasses to override in order to tweak the default behaviour.
+If you want to completely replace the main wrapping algorithm,
+you\'ll probably have to override _wrap_chunks().''')
 
     def test_properly_formated(self):
 
@@ -241,7 +246,7 @@ bytes() -> empty bytes object''')
             __class__ = property({}.__getitem__, {}.__setitem__)
         class Object(metaclass=Type):
             __slots__ = '__class__'
-        for meth, mtip  in ((Type, default_tip), (Object, default_tip),
+        for meth, mtip  in ((Type, get_spec(type)), (Object, default_tip),
                             (Object(), '')):
             with self.subTest(meth=meth, mtip=mtip):
                 self.assertEqual(get_spec(meth), mtip)