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81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
"""Extract version information from Include/patchlevel.h."""
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import re
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import sys
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from pathlib import Path
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from typing import Literal, NamedTuple
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CPYTHON_ROOT = Path(
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__file__, # cpython/Doc/tools/extensions/patchlevel.py
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"..", # cpython/Doc/tools/extensions
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"..", # cpython/Doc/tools
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"..", # cpython/Doc
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"..", # cpython
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).resolve()
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PATCHLEVEL_H = CPYTHON_ROOT / "Include" / "patchlevel.h"
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RELEASE_LEVELS = {
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"PY_RELEASE_LEVEL_ALPHA": "alpha",
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"PY_RELEASE_LEVEL_BETA": "beta",
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"PY_RELEASE_LEVEL_GAMMA": "candidate",
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"PY_RELEASE_LEVEL_FINAL": "final",
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}
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class version_info(NamedTuple): # noqa: N801
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major: int #: Major release number
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minor: int #: Minor release number
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micro: int #: Patch release number
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releaselevel: Literal["alpha", "beta", "candidate", "final"]
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serial: int #: Serial release number
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def get_header_version_info() -> version_info:
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# Capture PY_ prefixed #defines.
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pat = re.compile(r"\s*#define\s+(PY_\w*)\s+(\w+)", re.ASCII)
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defines = {}
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patchlevel_h = PATCHLEVEL_H.read_text(encoding="utf-8")
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for line in patchlevel_h.splitlines():
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if (m := pat.match(line)) is not None:
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name, value = m.groups()
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defines[name] = value
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return version_info(
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major=int(defines["PY_MAJOR_VERSION"]),
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minor=int(defines["PY_MINOR_VERSION"]),
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micro=int(defines["PY_MICRO_VERSION"]),
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releaselevel=RELEASE_LEVELS[defines["PY_RELEASE_LEVEL"]],
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serial=int(defines["PY_RELEASE_SERIAL"]),
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)
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def format_version_info(info: version_info) -> tuple[str, str]:
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version = f"{info.major}.{info.minor}"
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release = f"{info.major}.{info.minor}.{info.micro}"
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if info.releaselevel != "final":
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suffix = {"alpha": "a", "beta": "b", "candidate": "rc"}
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release += f"{suffix[info.releaselevel]}{info.serial}"
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return version, release
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def get_version_info():
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try:
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info = get_header_version_info()
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return format_version_info(info)
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except OSError:
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version, release = format_version_info(sys.version_info)
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print(
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f"Failed to get version info from Include/patchlevel.h, "
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f"using version of this interpreter ({release}).",
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file=sys.stderr,
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)
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return version, release
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if __name__ == "__main__":
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short_ver, full_ver = format_version_info(get_header_version_info())
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if sys.argv[1:2] == ["--short"]:
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print(short_ver)
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else:
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print(full_ver)
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