| Server IP : 153.92.12.197 / Your IP : 216.73.216.254 Web Server : LiteSpeed System : Linux id-dci-web1986.main-hosting.eu 5.14.0-611.26.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jan 29 05:24:47 EST 2026 x86_64 User : u686484674 ( 686484674) PHP Version : 8.0.30 Disable Function : system, exec, shell_exec, passthru, mysql_list_dbs, ini_alter, dl, symlink, link, chgrp, leak, popen, apache_child_terminate, virtual, mb_send_mail MySQL : OFF | cURL : ON | WGET : ON | Perl : OFF | Python : OFF | Sudo : OFF | Pkexec : OFF Directory : /lib/python3.9/site-packages/pkg_resources/_vendor/packaging/ |
Upload File : |
# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import absolute_import, division, print_function
import re
from ._typing import TYPE_CHECKING, cast
from .version import InvalidVersion, Version
if TYPE_CHECKING: # pragma: no cover
from typing import NewType, Union
NormalizedName = NewType("NormalizedName", str)
_canonicalize_regex = re.compile(r"[-_.]+")
def canonicalize_name(name):
# type: (str) -> NormalizedName
# This is taken from PEP 503.
value = _canonicalize_regex.sub("-", name).lower()
return cast("NormalizedName", value)
def canonicalize_version(_version):
# type: (str) -> Union[Version, str]
"""
This is very similar to Version.__str__, but has one subtle difference
with the way it handles the release segment.
"""
try:
version = Version(_version)
except InvalidVersion:
# Legacy versions cannot be normalized
return _version
parts = []
# Epoch
if version.epoch != 0:
parts.append("{0}!".format(version.epoch))
# Release segment
# NB: This strips trailing '.0's to normalize
parts.append(re.sub(r"(\.0)+$", "", ".".join(str(x) for x in version.release)))
# Pre-release
if version.pre is not None:
parts.append("".join(str(x) for x in version.pre))
# Post-release
if version.post is not None:
parts.append(".post{0}".format(version.post))
# Development release
if version.dev is not None:
parts.append(".dev{0}".format(version.dev))
# Local version segment
if version.local is not None:
parts.append("+{0}".format(version.local))
return "".join(parts)