mirror of
https://github.com/python/cpython
synced 2024-11-02 08:37:57 +00:00
39 lines
2.2 KiB
ReStructuredText
39 lines
2.2 KiB
ReStructuredText
.. highlightlang:: c
|
|
|
|
.. _apiabiversion:
|
|
|
|
***********************
|
|
API and ABI Versioning
|
|
***********************
|
|
|
|
``PY_VERSION_HEX`` is the Python version number encoded in a single integer.
|
|
|
|
For example if the ``PY_VERSION_HEX`` is set to ``0x030401a2``, the underlying
|
|
version information can be found by treating it as a 32 bit number in
|
|
the following manner:
|
|
|
|
+-------+-------------------------+------------------------------------------------+
|
|
| Bytes | Bits (big endian order) | Meaning |
|
|
+=======+=========================+================================================+
|
|
| ``1`` | ``1-8`` | ``PY_MAJOR_VERSION`` (the ``3`` in |
|
|
| | | ``3.4.1a2``) |
|
|
+-------+-------------------------+------------------------------------------------+
|
|
| ``2`` | ``9-16`` | ``PY_MINOR_VERSION`` (the ``4`` in |
|
|
| | | ``3.4.1a2``) |
|
|
+-------+-------------------------+------------------------------------------------+
|
|
| ``3`` | ``17-24`` | ``PY_MICRO_VERSION`` (the ``1`` in |
|
|
| | | ``3.4.1a2``) |
|
|
+-------+-------------------------+------------------------------------------------+
|
|
| ``4`` | ``25-28`` | ``PY_RELEASE_LEVEL`` (``0xA`` for alpha, |
|
|
| | | ``0xB`` for beta, ``0xC`` for release |
|
|
| | | candidate and ``0xF`` for final), in this |
|
|
| | | case it is alpha. |
|
|
+-------+-------------------------+------------------------------------------------+
|
|
| | ``29-32`` | ``PY_RELEASE_SERIAL`` (the ``2`` in |
|
|
| | | ``3.4.1a2``, zero for final releases) |
|
|
+-------+-------------------------+------------------------------------------------+
|
|
|
|
Thus ``3.4.1a2`` is hexversion ``0x030401a2``.
|
|
|
|
All the given macros are defined in :source:`Include/patchlevel.h`.
|
|
|