Управление версиями API и ABI

CPython exposes its version number in the following macros. Note that these correspond to the version code is built with, not necessarily the version used at run time.

See C API Stability for a discussion of API and ABI stability across versions.

PY_MAJOR_VERSION

The 3 in 3.4.1a2.

PY_MINOR_VERSION

The 4 in 3.4.1a2.

PY_MICRO_VERSION

The 1 in 3.4.1a2.

PY_RELEASE_LEVEL

The a in 3.4.1a2. This can be 0xA for alpha, 0xB for beta, 0xC for release candidate or 0xF for final.

PY_RELEASE_SERIAL

The 2 in 3.4.1a2. Zero for final releases.

PY_VERSION_HEX

The Python version number encoded in a single integer.

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	Value for 3.4.1a2
1	1-8	PY_MAJOR_VERSION	0x03
2	9-16	PY_MINOR_VERSION	0x04
3	17-24	PY_MICRO_VERSION	0x01
4	25-28	PY_RELEASE_LEVEL	0xA
	29-32	PY_RELEASE_SERIAL	0x2

Thus 3.4.1a2 is hexversion 0x030401a2 and 3.10.0 is hexversion 0x030a00f0.

Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ....

This version is also available via the symbol Py_Version.

const unsigned long Py_Version

Часть Стабильный ABI начиная с версии 3.11.

The Python runtime version number encoded in a single constant integer, with the same format as the PY_VERSION_HEX macro. This contains the Python version used at run time.

Добавлено в версии 3.11.

All the given macros are defined in Include/patchlevel.h.