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authorR. David Murray <rdmurray@bitdance.com>2009-04-27 18:38:19 (GMT)
committerR. David Murray <rdmurray@bitdance.com>2009-04-27 18:38:19 (GMT)
commite02a3017ca75fceccc7f90a4fa979d24e18d1295 (patch)
tree32d0f48a1f5d4a95049239945b5f24cc4d7ef29c /Doc/library/traceback.rst
parent7b2669b8de4e6061e8e0f0697c54020eb16ffd4f (diff)
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Third to last example is now marked as a test, but I can't actually test
it yet since sphinx can't run the doctests using python3. Merged revisions 72038 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r72038 | r.david.murray | 2009-04-27 13:22:36 -0400 (Mon, 27 Apr 2009) | 8 lines Make sys.xxx variable references into links, note that print_last only works when an exception gets to the interactive prompt, and update the examples after testing. The last one is now a valid Sphinx doctest, but of the preceding two one can't be made a doctest and the other one I'm postponing to 3.x because sphinx handles doctests as Unicode strings and that makes the 2.x output confusing. ........
Diffstat (limited to 'Doc/library/traceback.rst')
-rw-r--r--Doc/library/traceback.rst57
1 files changed, 28 insertions, 29 deletions
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst
index ce5fe45..6929c1d 100644
--- a/Doc/library/traceback.rst
+++ b/Doc/library/traceback.rst
@@ -14,7 +14,7 @@ interpreter.
.. index:: object: traceback
The module uses traceback objects --- this is the object type that is stored in
-the ``sys.last_traceback`` variable and returned as the third item from
+the :data:`sys.last_traceback` variable and returned as the third item from
:func:`sys.exc_info`.
The module defines the following functions:
@@ -55,7 +55,8 @@ The module defines the following functions:
.. function:: print_last([limit[, file[, chain]]])
This is a shorthand for ``print_exception(sys.last_type, sys.last_value,
- sys.last_traceback, limit, file)``.
+ sys.last_traceback, limit, file)``. In general it will work only after
+ an exception has reached an interactive prompt (see :data:`sys.last_type`).
.. function:: print_stack([f[, limit[, file]]])
@@ -157,7 +158,9 @@ module. ::
The following example demonstrates the different ways to print and format the
-exception and traceback::
+exception and traceback:
+
+.. testcode::
import sys, traceback
@@ -190,27 +193,27 @@ exception and traceback::
print("*** format_tb:")
print(repr(traceback.format_tb(exceptionTraceback)))
print("*** tb_lineno:", traceback.tb_lineno(exceptionTraceback))
- print("*** print_last:")
- traceback.print_last()
+The output for the example would look similar to this:
-The output for the example would look similar to this::
+.. testoutput::
+ :options: +NORMALIZE_WHITESPACE
*** print_tb:
- File "<doctest>", line 9, in <module>
+ File "<doctest...>", line 10, in <module>
lumberjack()
*** print_exception:
Traceback (most recent call last):
- File "<doctest>", line 9, in <module>
+ File "<doctest...>", line 10, in <module>
lumberjack()
- File "<doctest>", line 3, in lumberjack
+ File "<doctest...>", line 4, in lumberjack
bright_side_of_death()
IndexError: tuple index out of range
*** print_exc:
Traceback (most recent call last):
- File "<doctest>", line 9, in <module>
+ File "<doctest...>", line 10, in <module>
lumberjack()
- File "<doctest>", line 3, in lumberjack
+ File "<doctest...>", line 4, in lumberjack
bright_side_of_death()
IndexError: tuple index out of range
*** format_exc, first and last line:
@@ -218,26 +221,19 @@ The output for the example would look similar to this::
IndexError: tuple index out of range
*** format_exception:
['Traceback (most recent call last):\n',
- ' File "<doctest>", line 9, in <module>\n lumberjack()\n',
- ' File "<doctest>", line 3, in lumberjack\n bright_side_of_death()\n',
- ' File "<doctest>", line 6, in bright_side_of_death\n return tuple()[0]\n',
+ ' File "<doctest...>", line 10, in <module>\n lumberjack()\n',
+ ' File "<doctest...>", line 4, in lumberjack\n bright_side_of_death()\n',
+ ' File "<doctest...>", line 7, in bright_side_of_death\n return tuple()[0]\n',
'IndexError: tuple index out of range\n']
*** extract_tb:
- [('<doctest>', 9, '<module>', 'lumberjack()'),
- ('<doctest>', 3, 'lumberjack', 'bright_side_of_death()'),
- ('<doctest>', 6, 'bright_side_of_death', 'return tuple()[0]')]
+ [('<doctest...>', 10, '<module>', 'lumberjack()'),
+ ('<doctest...>', 4, 'lumberjack', 'bright_side_of_death()'),
+ (u'<doctest...>', 7, 'bright_side_of_death', 'return tuple()[0]')]
*** format_tb:
- [' File "<doctest>", line 9, in <module>\n lumberjack()\n',
- ' File "<doctest>", line 3, in lumberjack\n bright_side_of_death()\n',
- ' File "<doctest>", line 6, in bright_side_of_death\n return tuple()[0]\n']
- *** tb_lineno: 2
- *** print_last:
- Traceback (most recent call last):
- File "<doctest>", line 9, in <module>
- lumberjack()
- File "<doctest>", line 3, in lumberjack
- bright_side_of_death()
- IndexError: tuple index out of range
+ [' File "<doctest...>", line 10, in <module>\n lumberjack()\n',
+ ' File "<doctest...>", line 4, in lumberjack\n bright_side_of_death()\n',
+ ' File "<doctest...>", line 7, in bright_side_of_death\n return tuple()[0]\n']
+ *** tb_lineno: 10
The following example shows the different ways to print and format the stack::
@@ -266,7 +262,10 @@ The following example shows the different ways to print and format the stack::
' File "<doctest>", line 8, in lumberstack\n print(repr(traceback.format_stack()))\n']
-This last example demonstrates the final few formatting functions::
+This last example demonstrates the final few formatting functions:
+
+.. doctest::
+ :options: +NORMALIZE_WHITESPACE
>>> import traceback
>>> traceback.format_list([('spam.py', 3, '<module>', 'spam.eggs()'),