golden hour

/opt/alt/python37/lib/python3.7/site-packages/pip/_internal/commands

File/Folder	Size	Actions
__init__.py	4 KB
__init__.pyc	3.48 KB
__init__.pyo	3.48 KB
__pycache__	-
cache.py	5.54 KB
cache.pyc	5.45 KB
cache.pyo	5.45 KB
check.py	1.64 KB
check.pyc	1.91 KB
check.pyo	1.91 KB
completion.py	3.01 KB
completion.pyc	3.51 KB
completion.pyo	3.51 KB
configuration.py	9.13 KB
configuration.pyc	9.52 KB
configuration.pyo	9.52 KB
debug.py	7.14 KB
debug.pyc	7.9 KB
debug.pyo	7.9 KB
download.py	4.8 KB
download.pyc	4.7 KB
download.pyo	4.7 KB
freeze.py	3.37 KB
freeze.pyc	3.69 KB
freeze.pyo	3.69 KB
hash.py	1.8 KB
hash.pyc	2.67 KB
hash.pyo	2.67 KB
help.py	1.24 KB
help.pyc	1.68 KB
help.pyo	1.68 KB
install.py	28.05 KB
install.pyc	20.44 KB
install.pyo	20.38 KB
list.py	11.05 KB
list.pyc	10.33 KB
list.pyo	10.33 KB
search.py	5.62 KB
search.pyc	5.81 KB
search.pyo	5.77 KB
show.py	6.83 KB
show.pyc	6.59 KB
show.pyo	6.59 KB
uninstall.py	3.23 KB
uninstall.pyc	3.47 KB
uninstall.pyo	3.47 KB
wheel.py	6.27 KB
wheel.pyc	5.8 KB
wheel.pyo	5.72 KB

Edit: list.py

from __future__ import absolute_import

import json
import logging

from pip._vendor import six

from pip._internal.cli import cmdoptions
from pip._internal.cli.req_command import IndexGroupCommand
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.exceptions import CommandError
from pip._internal.index.collector import LinkCollector
from pip._internal.index.package_finder import PackageFinder
from pip._internal.models.selection_prefs import SelectionPreferences
from pip._internal.utils.misc import (
    dist_is_editable,
    get_installed_distributions,
    tabulate,
    write_output,
)
from pip._internal.utils.packaging import get_installer
from pip._internal.utils.parallel import map_multithread
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from optparse import Values
    from typing import List, Set, Tuple, Iterator

from pip._internal.network.session import PipSession
    from pip._vendor.pkg_resources import Distribution

logger = logging.getLogger(__name__)

class ListCommand(IndexGroupCommand):
    """
    List installed packages, including editables.

Packages are listed in a case-insensitive sorted order.
    """

ignore_require_venv = True
    usage = """
      %prog [options]"""

def add_options(self):
        # type: () -> None
        self.cmd_opts.add_option(
            '-o', '--outdated',
            action='store_true',
            default=False,
            help='List outdated packages')
        self.cmd_opts.add_option(
            '-u', '--uptodate',
            action='store_true',
            default=False,
            help='List uptodate packages')
        self.cmd_opts.add_option(
            '-e', '--editable',
            action='store_true',
            default=False,
            help='List editable projects.')
        self.cmd_opts.add_option(
            '-l', '--local',
            action='store_true',
            default=False,
            help=('If in a virtualenv that has global access, do not list '
                  'globally-installed packages.'),
        )
        self.cmd_opts.add_option(
            '--user',
            dest='user',
            action='store_true',
            default=False,
            help='Only output packages installed in user-site.')
        self.cmd_opts.add_option(cmdoptions.list_path())
        self.cmd_opts.add_option(
            '--pre',
            action='store_true',
            default=False,
            help=("Include pre-release and development versions. By default, "
                  "pip only finds stable versions."),
        )

self.cmd_opts.add_option(
            '--format',
            action='store',
            dest='list_format',
            default="columns",
            choices=('columns', 'freeze', 'json'),
            help="Select the output format among: columns (default), freeze, "
                 "or json",
        )

self.cmd_opts.add_option(
            '--not-required',
            action='store_true',
            dest='not_required',
            help="List packages that are not dependencies of "
                 "installed packages.",
        )

self.cmd_opts.add_option(
            '--exclude-editable',
            action='store_false',
            dest='include_editable',
            help='Exclude editable package from output.',
        )
        self.cmd_opts.add_option(
            '--include-editable',
            action='store_true',
            dest='include_editable',
            help='Include editable package from output.',
            default=True,
        )
        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, self.cmd_opts)

def _build_package_finder(self, options, session):
        # type: (Values, PipSession) -> PackageFinder
        """
        Create a package finder appropriate to this list command.
        """
        link_collector = LinkCollector.create(session, options=options)

# Pass allow_yanked=False to ignore yanked versions.
        selection_prefs = SelectionPreferences(
            allow_yanked=False,
            allow_all_prereleases=options.pre,
        )

return PackageFinder.create(
            link_collector=link_collector,
            selection_prefs=selection_prefs,
        )

def run(self, options, args):
        # type: (Values, List[str]) -> int
        if options.outdated and options.uptodate:
            raise CommandError(
                "Options --outdated and --uptodate cannot be combined.")

cmdoptions.check_list_path_option(options)

packages = get_installed_distributions(
            local_only=options.local,
            user_only=options.user,
            editables_only=options.editable,
            include_editables=options.include_editable,
            paths=options.path,
        )

# get_not_required must be called firstly in order to find and
        # filter out all dependencies correctly. Otherwise a package
        # can't be identified as requirement because some parent packages
        # could be filtered out before.
        if options.not_required:
            packages = self.get_not_required(packages, options)

if options.outdated:
            packages = self.get_outdated(packages, options)
        elif options.uptodate:
            packages = self.get_uptodate(packages, options)

self.output_package_listing(packages, options)
        return SUCCESS

def get_outdated(self, packages, options):
        # type: (List[Distribution], Values) -> List[Distribution]
        return [
            dist for dist in self.iter_packages_latest_infos(packages, options)
            if dist.latest_version > dist.parsed_version
        ]

def get_uptodate(self, packages, options):
        # type: (List[Distribution], Values) -> List[Distribution]
        return [
            dist for dist in self.iter_packages_latest_infos(packages, options)
            if dist.latest_version == dist.parsed_version
        ]

def get_not_required(self, packages, options):
        # type: (List[Distribution], Values) -> List[Distribution]
        dep_keys = set()  # type: Set[Distribution]
        for dist in packages:
            dep_keys.update(requirement.key for requirement in dist.requires())

# Create a set to remove duplicate packages, and cast it to a list
        # to keep the return type consistent with get_outdated and
        # get_uptodate
        return list({pkg for pkg in packages if pkg.key not in dep_keys})

def iter_packages_latest_infos(self, packages, options):
        # type: (List[Distribution], Values) -> Iterator[Distribution]
        with self._build_session(options) as session:
            finder = self._build_package_finder(options, session)

def latest_info(dist):
                # type: (Distribution) -> Distribution
                typ = 'unknown'
                all_candidates = finder.find_all_candidates(dist.key)
                if not options.pre:
                    # Remove prereleases
                    all_candidates = [candidate for candidate in all_candidates
                                      if not candidate.version.is_prerelease]

evaluator = finder.make_candidate_evaluator(
                    project_name=dist.project_name,
                )
                best_candidate = evaluator.sort_best_candidate(all_candidates)
                if best_candidate is None:
                    return None

remote_version = best_candidate.version
                if best_candidate.link.is_wheel:
                    typ = 'wheel'
                else:
                    typ = 'sdist'
                # This is dirty but makes the rest of the code much cleaner
                dist.latest_version = remote_version
                dist.latest_filetype = typ
                return dist

for dist in map_multithread(latest_info, packages):
                if dist is not None:
                    yield dist

def output_package_listing(self, packages, options):
        # type: (List[Distribution], Values) -> None
        packages = sorted(
            packages,
            key=lambda dist: dist.project_name.lower(),
        )
        if options.list_format == 'columns' and packages:
            data, header = format_for_columns(packages, options)
            self.output_package_listing_columns(data, header)
        elif options.list_format == 'freeze':
            for dist in packages:
                if options.verbose >= 1:
                    write_output("%s==%s (%s)", dist.project_name,
                                 dist.version, dist.location)
                else:
                    write_output("%s==%s", dist.project_name, dist.version)
        elif options.list_format == 'json':
            write_output(format_for_json(packages, options))

def output_package_listing_columns(self, data, header):
        # type: (List[List[str]], List[str]) -> None
        # insert the header first: we need to know the size of column names
        if len(data) > 0:
            data.insert(0, header)

pkg_strings, sizes = tabulate(data)

# Create and add a separator.
        if len(data) > 0:
            pkg_strings.insert(1, " ".join(map(lambda x: '-' * x, sizes)))

for val in pkg_strings:
            write_output(val)

def format_for_columns(pkgs, options):
    # type: (List[Distribution], Values) -> Tuple[List[List[str]], List[str]]
    """
    Convert the package data into something usable
    by output_package_listing_columns.
    """
    running_outdated = options.outdated
    # Adjust the header for the `pip list --outdated` case.
    if running_outdated:
        header = ["Package", "Version", "Latest", "Type"]
    else:
        header = ["Package", "Version"]

data = []
    if options.verbose >= 1 or any(dist_is_editable(x) for x in pkgs):
        header.append("Location")
    if options.verbose >= 1:
        header.append("Installer")

for proj in pkgs:
        # if we're working on the 'outdated' list, separate out the
        # latest_version and type
        row = [proj.project_name, proj.version]

if running_outdated:
            row.append(proj.latest_version)
            row.append(proj.latest_filetype)

if options.verbose >= 1 or dist_is_editable(proj):
            row.append(proj.location)
        if options.verbose >= 1:
            row.append(get_installer(proj))

data.append(row)

return data, header

def format_for_json(packages, options):
    # type: (List[Distribution], Values) -> str
    data = []
    for dist in packages:
        info = {
            'name': dist.project_name,
            'version': six.text_type(dist.version),
        }
        if options.verbose >= 1:
            info['location'] = dist.location
            info['installer'] = get_installer(dist)
        if options.outdated:
            info['latest_version'] = six.text_type(dist.latest_version)
            info['latest_filetype'] = dist.latest_filetype
        data.append(info)
    return json.dumps(data)