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::

self.message('display %s: %r [old: %r]'%

(expr,newvalue,oldvalue))

definteraction(self,frame,traceback):

definteraction(self,frame,tb_or_exc):

ifisinstance(traceback,BaseException):

traceback,exception=traceback.__traceback__,traceback

ifisinstance(tb_or_exc,BaseException):

tb_or_exc,exception=tb_or_exc.__traceback__,tb_or_exc

self._chained_exceptions= [exception]

whilecurrent:=current.__context__:

else:

Pdb._previous_sigint_handler=None

ifself.setup(frame,traceback):

ifself.setup(frame,tb_or_exc):

self.forget()

self.lineno=None

defdo_exceptions(self,arg):

ifnotargorarg=="list":

ifnotarg:

forix,excinenumerate(self._chained_exceptions):

prompt=">"ifix==self._chained_exception_indexelse" "

self.message(f"{prompt}{ix}{exc!r}")