(self)
Display the exception that just occurred.

        We remove the first stack item because it is our own code.

        The output is written by self.write(), below.
Display the exception that just occurred.
Display the exception that just occurred .
def showtraceback(self):
        """Display the exception that just occurred.

        We remove the first stack item because it is our own code.

        The output is written by self.write(), below.

        """
        sys.last_type, sys.last_value, last_tb = ei = sys.exc_info()
        sys.last_traceback = last_tb
        try:
            lines = []
            for value, tb in traceback._iter_chain(*ei[1:]):
                if isinstance(value, str):
                    lines.append(value)
                    lines.append('\n')
                    continue
                if tb:
                    tblist = traceback.extract_tb(tb)
                    if tb is last_tb:
                        # The last traceback includes the frame we
                        # exec'd in
                        del tblist[:1]
                    tblines = traceback.format_list(tblist)
                    if tblines:
                        lines.append("Traceback (most recent call last):\n")
                        lines.extend(tblines)
                lines.extend(traceback.format_exception_only(type(value),
                                                             value))
        finally:
            tblist = last_tb = ei = None
        self.write(''.join(lines))
def showtraceback ( self ) : sys . last_type , sys . last_value , last_tb = ei = sys . exc_info ( ) sys . last_traceback = last_tb try : lines = [ ] for value , tb in traceback . _iter_chain ( * ei [ 1 : ] ) : if isinstance ( value , str ) : lines . append ( value ) lines . append ( '\n' ) continue if tb : tblist = traceback . extract_tb ( tb ) if tb is last_tb : # The last traceback includes the frame we # exec'd in del tblist [ : 1 ] tblines = traceback . format_list ( tblist ) if tblines : lines . append ( "Traceback (most recent call last):\n" ) lines . extend ( tblines ) lines . extend ( traceback . format_exception_only ( type ( value ) , value ) ) finally : tblist = last_tb = ei = None self . write ( '' . join ( lines ) )