Merge pull request #11979 from Carreau/ipdb-ptk

Add prompt toolkit 3 compatibility to ipdb

IPython/terminal/debugger.py

@@ -17,6 +17,9 b' from prompt_toolkit.shortcuts.prompt import PromptSession'
 from prompt_toolkit.enums import EditingMode
 from prompt_toolkit.formatted_text import PygmentsTokens
 
+from prompt_toolkit import __version__ as ptk_version
+PTK3 = ptk_version.startswith('3.')
+
 
 class TerminalPdb(Pdb):
     """Standalone IPython debugger."""
@@ -49,7 +52,7 b' class TerminalPdb(Pdb):'
                                   & ~cursor_in_leading_ws
                               ))(display_completions_like_readline)
 
-        self.pt_app = PromptSession(
+        options = dict(
                             message=(lambda: PygmentsTokens(get_prompt_tokens())),
                             editing_mode=getattr(EditingMode, self.shell.editing_mode.upper()),
                             key_bindings=kb,
@@ -59,10 +62,13 b' class TerminalPdb(Pdb):'
                             mouse_support=self.shell.mouse_support,
                             complete_style=self.shell.pt_complete_style,
                             style=self.shell.style,
-                            inputhook=self.shell.inputhook,
                             color_depth=self.shell.color_depth,
         )
 
+        if not PTK3:
+            options['inputhook'] = self.inputhook
+        self.pt_app = PromptSession(**options)
+
     def cmdloop(self, intro=None):
         """Repeatedly issue a prompt, accept input, parse an initial prefix
         off the received input, and dispatch to action methods, passing them