bpo-41609: Fix output of pdb's whatis command for instance methods (GH-21935) (#21977)

(cherry picked from commit 022bc7572f061e1d1132a4db9d085b29707701e7)

Co-authored-by: Irit Katriel <iritkatriel@yahoo.com>
diff --git a/Lib/pdb.py b/Lib/pdb.py
index 0810235..d7d9571 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1312,14 +1312,6 @@
             # _getval() already printed the error
             return
         code = None
-        # Is it a function?
-        try:
-            code = value.__code__
-        except Exception:
-            pass
-        if code:
-            self.message('Function %s' % code.co_name)
-            return
         # Is it an instance method?
         try:
             code = value.__func__.__code__
@@ -1328,6 +1320,14 @@
         if code:
             self.message('Method %s' % code.co_name)
             return
+        # Is it a function?
+        try:
+            code = value.__code__
+        except Exception:
+            pass
+        if code:
+            self.message('Function %s' % code.co_name)
+            return
         # Is it a class?
         if value.__class__ is type:
             self.message('Class %s.%s' % (value.__module__, value.__qualname__))