Adresse secodn round of review

Carreau · Carreau · commit b2f6e8567b51 · 2023-08-09T10:50:53.000+02:00
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst
@@ -639,13 +639,15 @@ can be overridden by the local file.
 
    Print the return value for the last return of the current function.
 
-.. pdbcommand:: exceptions [arg]
+.. pdbcommand:: exceptions [excnumber]
 
    List or jump between chained exceptions.
 
-   If ``Pdb.post_mortem()`` is called with a chained exception, it will now allow
-   the user to move between the chained exceptions using ``exceptions`` command to
-   list exceptions, and ``exception <number>`` to switch to that exception.
+   When using ``pdb.pm()``  or ``Pdb.post_mortem(...)`` with a chained exception
+   instead of a traceback, it will now allow the user to move between the
+   chained exceptions using ``exceptions`` command to list exceptions, and
+   ``exception <number>`` to switch to that exception.
+
 
    Example::
 
diff --git a/Lib/pdb.py b/Lib/pdb.py
@@ -416,11 +416,11 @@ def preloop(self):
                     self.message('display %s: %r  [old: %r]' %
                                  (expr, newvalue, oldvalue))
 
-    def interaction(self, frame, traceback):
+    def interaction(self, frame, tb_or_exc):
         # Restore the previous signal handler at the Pdb prompt.
 
-        if isinstance(traceback, BaseException):
-            traceback, exception = traceback.__traceback__, traceback
+        if isinstance(tb_or_exc, BaseException):
+            tb_or_exc, exception = tb_or_exc.__traceback__, tb_or_exc
             self._chained_exceptions = [exception]
             current = exception
             while current := current.__context__:
@@ -436,7 +436,7 @@ def interaction(self, frame, traceback):
                 pass
             else:
                 Pdb._previous_sigint_handler = None
-        if self.setup(frame, traceback):
+        if self.setup(frame, tb_or_exc):
             # no interaction desired at this time (happens if .pdbrc contains
             # a command like "continue")
             self.forget()
@@ -1087,7 +1087,7 @@ def _select_frame(self, number):
         self.lineno = None
 
     def do_exceptions(self, arg):
-        if not arg or arg == "list":
+        if not arg:
             for ix, exc in enumerate(self._chained_exceptions):
                 prompt = ">" if ix == self._chained_exception_index else " "
                 self.message(f"{prompt} {ix} {exc!r}")
