Mi opinión es una combinación de un par de respuestas publicadas, con algunas modificaciones para que sean más fáciles de usar desde un entorno de Python en ejecución.
La idea es proporcionar un comando completamente nuevo (modelado a partir del comando de instalación) que le brinde una instancia del buscador de paquetes para usar. La ventaja es que funciona y utiliza cualquier índice que pip admita y lea sus archivos de configuración de pip locales, de modo que obtenga los resultados correctos como lo haría con una instalación de pip normal.
Intenté hacer que sea compatible con pip v 9.xy 10.x, pero solo lo probé en 9.x
https://gist.github.com/kaos/68511bd013fcdebe766c981f50b473d4
#!/usr/bin/env python
# When you want a easy way to get at all (or the latest) version of a certain python package from a PyPi index.
import sys
import logging
try:
from pip._internal import cmdoptions, main
from pip._internal.commands import commands_dict
from pip._internal.basecommand import RequirementCommand
except ImportError:
from pip import cmdoptions, main
from pip.commands import commands_dict
from pip.basecommand import RequirementCommand
from pip._vendor.packaging.version import parse as parse_version
logger = logging.getLogger('pip')
class ListPkgVersionsCommand(RequirementCommand):
"""
List all available versions for a given package from:
- PyPI (and other indexes) using requirement specifiers.
- VCS project urls.
- Local project directories.
- Local or remote source archives.
"""
name = "list-pkg-versions"
usage = """
%prog [options] <requirement specifier> [package-index-options] ...
%prog [options] [-e] <vcs project url> ...
%prog [options] [-e] <local project path> ...
%prog [options] <archive url/path> ..."""
summary = 'List package versions.'
def __init__(self, *args, **kw):
super(ListPkgVersionsCommand, self).__init__(*args, **kw)
cmd_opts = self.cmd_opts
cmd_opts.add_option(cmdoptions.install_options())
cmd_opts.add_option(cmdoptions.global_options())
cmd_opts.add_option(cmdoptions.use_wheel())
cmd_opts.add_option(cmdoptions.no_use_wheel())
cmd_opts.add_option(cmdoptions.no_binary())
cmd_opts.add_option(cmdoptions.only_binary())
cmd_opts.add_option(cmdoptions.pre())
cmd_opts.add_option(cmdoptions.require_hashes())
index_opts = cmdoptions.make_option_group(
cmdoptions.index_group,
self.parser,
)
self.parser.insert_option_group(0, index_opts)
self.parser.insert_option_group(0, cmd_opts)
def run(self, options, args):
cmdoptions.resolve_wheel_no_use_binary(options)
cmdoptions.check_install_build_global(options)
with self._build_session(options) as session:
finder = self._build_package_finder(options, session)
# do what you please with the finder object here... ;)
for pkg in args:
logger.info(
'%s: %s', pkg,
', '.join(
sorted(
set(str(c.version) for c in finder.find_all_candidates(pkg)),
key=parse_version,
)
)
)
commands_dict[ListPkgVersionsCommand.name] = ListPkgVersionsCommand
if __name__ == '__main__':
sys.exit(main())
Salida de ejemplo
./list-pkg-versions.py list-pkg-versions pika django
pika: 0.5, 0.5.1, 0.5.2, 0.9.1a0, 0.9.2a0, 0.9.3, 0.9.4, 0.9.5, 0.9.6, 0.9.7, 0.9.8, 0.9.9, 0.9.10, 0.9.11, 0.9.12, 0.9.13, 0.9.14, 0.10.0b1, 0.10.0b2, 0.10.0, 0.11.0b1, 0.11.0, 0.11.1, 0.11.2, 0.12.0b2
django: 1.1.3, 1.1.4, 1.2, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 1.2.7, 1.3, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.3.7, 1.4, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5, 1.4.6, 1.4.7, 1.4.8, 1.4.9, 1.4.10, 1.4.11, 1.4.12, 1.4.13, 1.4.14, 1.4.15, 1.4.16, 1.4.17, 1.4.18, 1.4.19, 1.4.20, 1.4.21, 1.4.22, 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 1.5.7, 1.5.8, 1.5.9, 1.5.10, 1.5.11, 1.5.12, 1.6, 1.6.1, 1.6.2, 1.6.3, 1.6.4, 1.6.5, 1.6.6, 1.6.7, 1.6.8, 1.6.9, 1.6.10, 1.6.11, 1.7, 1.7.1, 1.7.2, 1.7.3, 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.7.8, 1.7.9, 1.7.10, 1.7.11, 1.8a1, 1.8b1, 1.8b2, 1.8rc1, 1.8, 1.8.1, 1.8.2, 1.8.3, 1.8.4, 1.8.5, 1.8.6, 1.8.7, 1.8.8, 1.8.9, 1.8.10, 1.8.11, 1.8.12, 1.8.13, 1.8.14, 1.8.15, 1.8.16, 1.8.17, 1.8.18, 1.8.19, 1.9a1, 1.9b1, 1.9rc1, 1.9rc2, 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7, 1.9.8, 1.9.9, 1.9.10, 1.9.11, 1.9.12, 1.9.13, 1.10a1, 1.10b1, 1.10rc1, 1.10, 1.10.1, 1.10.2, 1.10.3, 1.10.4, 1.10.5, 1.10.6, 1.10.7, 1.10.8, 1.11a1, 1.11b1, 1.11rc1, 1.11, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5, 1.11.6, 1.11.7, 1.11.8, 1.11.9, 1.11.10, 1.11.11, 1.11.12, 2.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4