Merge pull request #12994 from meeseeksmachine/auto-backport-of-pr-12993-on-7.x

Backport PR  #12993 on branch 7.x (Turn Readonly predicates to false.)

IPython/core/debugger.py

@@ -284,7 +284,7 b' class Pdb(OldPdb):'
         self.skip_hidden = True
 
         # list of predicates we use to skip frames
-        self._predicates = {"tbhide": True, "readonly": True, "ipython_internal": True}
+        self._predicates = {"tbhide": True, "readonly": False, "ipython_internal": True}
 
     def set_colors(self, scheme):
         """Shorthand access to the color table scheme selector method."""