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version.py
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44 lines (34 loc) · 1.08 KB
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import re
from typing import NamedTuple
__all__ = ["version", "version_info"]
version = "3.0.0b6"
_re_version = re.compile(r"(\d+)\.(\d+)\.(\d+)(\D*)(\d*)")
class VersionInfo(NamedTuple):
major: int
minor: int
micro: int
releaselevel: str
serial: int
@classmethod
def from_str(cls, v: str) -> "VersionInfo":
groups = _re_version.match(v).groups() # type: ignore
major, minor, micro = map(int, groups[:3])
level = (groups[3] or "")[:1]
if level == "a":
level = "alpha"
elif level == "b":
level = "beta"
elif level in ("c", "r"):
level = "candidate"
else:
level = "final"
serial = groups[4]
serial = int(serial) if serial else 0
return cls(major, minor, micro, level, serial)
def __str__(self) -> str:
v = f"{self.major}.{self.minor}.{self.micro}"
level = self.releaselevel
if level and level != "final":
v = f"{v}{level[:1]}{self.serial}"
return v
version_info = VersionInfo.from_str(version)