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Diffstat (limited to 'Doc/whatsnew/3.6.rst')
| -rw-r--r-- | Doc/whatsnew/3.6.rst | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst index 2f61892..5a3cea0 100644 --- a/Doc/whatsnew/3.6.rst +++ b/Doc/whatsnew/3.6.rst @@ -2160,14 +2160,15 @@ Changes in the Python API * :c:func:`PyErr_SetImportError` now sets :exc:`TypeError` when its **msg** argument is not set. Previously only ``NULL`` was returned. -* The format of the ``co_lnotab`` attribute of code objects changed to support +* The format of the :attr:`~codeobject.co_lnotab` attribute of code objects + changed to support a negative line number delta. By default, Python does not emit bytecode with a negative line number delta. Functions using :attr:`frame.f_lineno`, ``PyFrame_GetLineNumber()`` or ``PyCode_Addr2Line()`` are not affected. - Functions directly decoding ``co_lnotab`` should be updated to use a signed + Functions directly decoding :attr:`!co_lnotab` should be updated to use a signed 8-bit integer type for the line number delta, but this is only required to support applications using a negative line number delta. See - ``Objects/lnotab_notes.txt`` for the ``co_lnotab`` format and how to decode + ``Objects/lnotab_notes.txt`` for the :attr:`!co_lnotab` format and how to decode it, and see the :pep:`511` for the rationale. * The functions in the :mod:`compileall` module now return booleans instead |