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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
__init__.py	3.79 KB	-rw-r--r--
cache.py	7.76 KB	-rw-r--r--
check.py	1.64 KB	-rw-r--r--
completion.py	4.19 KB	-rw-r--r--
configuration.py	9.54 KB	-rw-r--r--
debug.py	6.64 KB	-rw-r--r--
download.py	5.15 KB	-rw-r--r--
freeze.py	3.1 KB	-rw-r--r--
hash.py	1.66 KB	-rw-r--r--
help.py	1.11 KB	-rw-r--r--
index.py	4.62 KB	-rw-r--r--
inspect.py	3.11 KB	-rw-r--r--
install.py	28.32 KB	-rw-r--r--
list.py	12.47 KB	-rw-r--r--
search.py	5.5 KB	-rw-r--r--
show.py	7.33 KB	-rw-r--r--
uninstall.py	3.8 KB	-rw-r--r--
wheel.py	6.26 KB	-rw-r--r--

Code Editor : show.py

import logging
from optparse import Values
from typing import Generator, Iterable, Iterator, List, NamedTuple, Optional

from pip._vendor.packaging.requirements import InvalidRequirement
from pip._vendor.packaging.utils import canonicalize_name

from pip._internal.cli.base_command import Command
from pip._internal.cli.status_codes import ERROR, SUCCESS
from pip._internal.metadata import BaseDistribution, get_default_environment
from pip._internal.utils.misc import write_output

logger = logging.getLogger(__name__)

class ShowCommand(Command):
    """
    Show information about one or more installed packages.

The output is in RFC-compliant mail header format.
    """

usage = """
      %prog [options] <package> ..."""
    ignore_require_venv = True

def add_options(self) -> None:
        self.cmd_opts.add_option(
            "-f",
            "--files",
            dest="files",
            action="store_true",
            default=False,
            help="Show the full list of installed files for each package.",
        )

self.parser.insert_option_group(0, self.cmd_opts)

def run(self, options: Values, args: List[str]) -> int:
        if not args:
            logger.warning("ERROR: Please provide a package name or names.")
            return ERROR
        query = args

results = search_packages_info(query)
        if not print_results(
            results, list_files=options.files, verbose=options.verbose
        ):
            return ERROR
        return SUCCESS

class _PackageInfo(NamedTuple):
    name: str
    version: str
    location: str
    editable_project_location: Optional[str]
    requires: List[str]
    required_by: List[str]
    installer: str
    metadata_version: str
    classifiers: List[str]
    summary: str
    homepage: str
    project_urls: List[str]
    author: str
    author_email: str
    license: str
    entry_points: List[str]
    files: Optional[List[str]]

def search_packages_info(query: List[str]) -> Generator[_PackageInfo, None, None]:
    """
    Gather details from installed distributions. Print distribution name,
    version, location, and installed files. Installed files requires a
    pip generated 'installed-files.txt' in the distributions '.egg-info'
    directory.
    """
    env = get_default_environment()

installed = {dist.canonical_name: dist for dist in env.iter_all_distributions()}
    query_names = [canonicalize_name(name) for name in query]
    missing = sorted(
        [name for name, pkg in zip(query, query_names) if pkg not in installed]
    )
    if missing:
        logger.warning("Package(s) not found: %s", ", ".join(missing))

def _get_requiring_packages(current_dist: BaseDistribution) -> Iterator[str]:
        return (
            dist.metadata["Name"] or "UNKNOWN"
            for dist in installed.values()
            if current_dist.canonical_name
            in {canonicalize_name(d.name) for d in dist.iter_dependencies()}
        )

for query_name in query_names:
        try:
            dist = installed[query_name]
        except KeyError:
            continue

try:
            requires = sorted(
                # Avoid duplicates in requirements (e.g. due to environment markers).
                {req.name for req in dist.iter_dependencies()},
                key=str.lower,
            )
        except InvalidRequirement:
            requires = sorted(dist.iter_raw_dependencies(), key=str.lower)

try:
            required_by = sorted(_get_requiring_packages(dist), key=str.lower)
        except InvalidRequirement:
            required_by = ["#N/A"]

try:
            entry_points_text = dist.read_text("entry_points.txt")
            entry_points = entry_points_text.splitlines(keepends=False)
        except FileNotFoundError:
            entry_points = []

files_iter = dist.iter_declared_entries()
        if files_iter is None:
            files: Optional[List[str]] = None
        else:
            files = sorted(files_iter)

metadata = dist.metadata

project_urls = metadata.get_all("Project-URL", [])
        homepage = metadata.get("Home-page", "")
        if not homepage:
            # It's common that there is a "homepage" Project-URL, but Home-page
            # remains unset (especially as PEP 621 doesn't surface the field).
            #
            # This logic was taken from PyPI's codebase.
            for url in project_urls:
                url_label, url = url.split(",", maxsplit=1)
                normalized_label = (
                    url_label.casefold().replace("-", "").replace("_", "").strip()
                )
                if normalized_label == "homepage":
                    homepage = url.strip()
                    break

yield _PackageInfo(
            name=dist.raw_name,
            version=dist.raw_version,
            location=dist.location or "",
            editable_project_location=dist.editable_project_location,
            requires=requires,
            required_by=required_by,
            installer=dist.installer,
            metadata_version=dist.metadata_version or "",
            classifiers=metadata.get_all("Classifier", []),
            summary=metadata.get("Summary", ""),
            homepage=homepage,
            project_urls=project_urls,
            author=metadata.get("Author", ""),
            author_email=metadata.get("Author-email", ""),
            license=metadata.get("License", ""),
            entry_points=entry_points,
            files=files,
        )

def print_results(
    distributions: Iterable[_PackageInfo],
    list_files: bool,
    verbose: bool,
) -> bool:
    """
    Print the information from installed distributions found.
    """
    results_printed = False
    for i, dist in enumerate(distributions):
        results_printed = True
        if i > 0:
            write_output("---")

write_output("Name: %s", dist.name)
        write_output("Version: %s", dist.version)
        write_output("Summary: %s", dist.summary)
        write_output("Home-page: %s", dist.homepage)
        write_output("Author: %s", dist.author)
        write_output("Author-email: %s", dist.author_email)
        write_output("License: %s", dist.license)
        write_output("Location: %s", dist.location)
        if dist.editable_project_location is not None:
            write_output(
                "Editable project location: %s", dist.editable_project_location
            )
        write_output("Requires: %s", ", ".join(dist.requires))
        write_output("Required-by: %s", ", ".join(dist.required_by))

if verbose:
            write_output("Metadata-Version: %s", dist.metadata_version)
            write_output("Installer: %s", dist.installer)
            write_output("Classifiers:")
            for classifier in dist.classifiers:
                write_output("  %s", classifier)
            write_output("Entry-points:")
            for entry in dist.entry_points:
                write_output("  %s", entry.strip())
            write_output("Project-URLs:")
            for project_url in dist.project_urls:
                write_output("  %s", project_url)
        if list_files:
            write_output("Files:")
            if dist.files is None:
                write_output("Cannot locate RECORD or installed-files.txt")
            else:
                for line in dist.files:
                    write_output("  %s", line.strip())
    return results_printed

${this.title}

Code Editor : show.py