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Diffstat (limited to 'Doc/library/traceback.rst')
| -rw-r--r-- | Doc/library/traceback.rst | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst index 69818ba..561c852 100644 --- a/Doc/library/traceback.rst +++ b/Doc/library/traceback.rst @@ -16,9 +16,8 @@ interpreter. .. index:: object: traceback -The module uses traceback objects --- this is the object type that is stored in -the :data:`sys.last_traceback` variable and returned as the third item from -:func:`sys.exc_info`. +The module uses traceback objects --- these are objects of type :class:`types.TracebackType`, +which are assigned to the ``__traceback__`` field of :class:`BaseException` instances. .. seealso:: @@ -81,7 +80,7 @@ The module defines the following functions: .. function:: print_exc(limit=None, file=None, chain=True) - This is a shorthand for ``print_exception(*sys.exc_info(), limit, file, + This is a shorthand for ``print_exception(sys.exception(), limit, file, chain)``. @@ -444,11 +443,11 @@ exception and traceback: try: lumberjack() except IndexError: - exc_type, exc_value, exc_traceback = sys.exc_info() + exc = sys.exception() print("*** print_tb:") - traceback.print_tb(exc_traceback, limit=1, file=sys.stdout) + traceback.print_tb(exc.__traceback__, limit=1, file=sys.stdout) print("*** print_exception:") - traceback.print_exception(exc_value, limit=2, file=sys.stdout) + traceback.print_exception(exc, limit=2, file=sys.stdout) print("*** print_exc:") traceback.print_exc(limit=2, file=sys.stdout) print("*** format_exc, first and last line:") @@ -456,12 +455,12 @@ exception and traceback: print(formatted_lines[0]) print(formatted_lines[-1]) print("*** format_exception:") - print(repr(traceback.format_exception(exc_value))) + print(repr(traceback.format_exception(exc))) print("*** extract_tb:") - print(repr(traceback.extract_tb(exc_traceback))) + print(repr(traceback.extract_tb(exc.__traceback__))) print("*** format_tb:") - print(repr(traceback.format_tb(exc_traceback))) - print("*** tb_lineno:", exc_traceback.tb_lineno) + print(repr(traceback.format_tb(exc.__traceback__))) + print("*** tb_lineno:", exc.__traceback__.tb_lineno) The output for the example would look similar to this: |