My take is a combination of a couple of posted answers, with some modifications to make them easier to use from within a running python environment.
The idea is to provide a entirely new command (modeled after the install command) that gives you an instance of the package finder to use. The upside is that it works with, and uses, any indexes that pip supports and reads your local pip configuration files, so you get the correct results as you would with a normal pip install.
I've made an attempt at making it compatible with both pip v 9.x and 10.x.. but only tried it on 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())
Example output
./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
pip install pylibmc==
is perfect. – Jonathan