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base_command.py

"""Base Command class, and related routines"""

import logging
import logging.config
import optparse
import os
import sys
import traceback
from optparse import Values
from typing import List, Optional, Tuple

from pip._vendor.rich import reconfigure
from pip._vendor.rich import traceback as rich_traceback

from pip._internal.cli import cmdoptions
from pip._internal.cli.command_context import CommandContextMixIn
from pip._internal.cli.parser import ConfigOptionParser, UpdatingDefaultsHelpFormatter
from pip._internal.cli.status_codes import (
    ERROR,
    PREVIOUS_BUILD_DIR_ERROR,
    UNKNOWN_ERROR,
    VIRTUALENV_NOT_FOUND,
)
from pip._internal.exceptions import (
    BadCommand,
    CommandError,
    DiagnosticPipError,
    InstallationError,
    NetworkConnectionError,
    PreviousBuildDirError,
)
from pip._internal.utils.filesystem import check_path_owner
from pip._internal.utils.logging import BrokenStdoutLoggingError, setup_logging
from pip._internal.utils.misc import get_prog, normalize_path
from pip._internal.utils.temp_dir import TempDirectoryTypeRegistry as TempDirRegistry
from pip._internal.utils.temp_dir import global_tempdir_manager, tempdir_registry
from pip._internal.utils.virtualenv import running_under_virtualenv

__all__ = ["Command"]

logger = logging.getLogger(__name__)

class Command(CommandContextMixIn):
    usage: str = ""
    ignore_require_venv: bool = False

def __init__(self, name: str, summary: str, isolated: bool = False) -> None:
        super().__init__()

self.name = name
        self.summary = summary
        self.parser = ConfigOptionParser(
            usage=self.usage,
            prog=f"{get_prog()} {name}",
            formatter=UpdatingDefaultsHelpFormatter(),
            add_help_option=False,
            name=name,
            description=self.__doc__,
            isolated=isolated,
        )

self.tempdir_registry: Optional[TempDirRegistry] = None

# Commands should add options to this option group
        optgroup_name = f"{self.name.capitalize()} Options"
        self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name)

# Add the general options
        gen_opts = cmdoptions.make_option_group(
            cmdoptions.general_group,
            self.parser,
        )
        self.parser.add_option_group(gen_opts)

self.add_options()

def add_options(self) -> None:
        pass

def handle_pip_version_check(self, options: Values) -> None:
        """
        This is a no-op so that commands by default do not do the pip version
        check.
        """
        # Make sure we do the pip version check if the index_group options
        # are present.
        assert not hasattr(options, "no_index")

def run(self, options: Values, args: List[str]) -> int:
        raise NotImplementedError

def _run_wrapper(self, level_number: int, options: Values, args: List[str]) -> int:
        def _inner_run() -> int:
            try:
                return self.run(options, args)
            finally:
                self.handle_pip_version_check(options)

if options.debug_mode:
            rich_traceback.install(show_locals=True)
            return _inner_run()

try:
            status = _inner_run()
            assert isinstance(status, int)
            return status
        except DiagnosticPipError as exc:
            logger.error("%s", exc, extra={"rich": True})
            logger.debug("Exception information:", exc_info=True)

return ERROR
        except PreviousBuildDirError as exc:
            logger.critical(str(exc))
            logger.debug("Exception information:", exc_info=True)

return PREVIOUS_BUILD_DIR_ERROR
        except (
            InstallationError,
            BadCommand,
            NetworkConnectionError,
        ) as exc:
            logger.critical(str(exc))
            logger.debug("Exception information:", exc_info=True)

return ERROR
        except CommandError as exc:
            logger.critical("%s", exc)
            logger.debug("Exception information:", exc_info=True)

return ERROR
        except BrokenStdoutLoggingError:
            # Bypass our logger and write any remaining messages to
            # stderr because stdout no longer works.
            print("ERROR: Pipe to stdout was broken", file=sys.stderr)
            if level_number <= logging.DEBUG:
                traceback.print_exc(file=sys.stderr)

return ERROR
        except KeyboardInterrupt:
            logger.critical("Operation cancelled by user")
            logger.debug("Exception information:", exc_info=True)

return ERROR
        except BaseException:
            logger.critical("Exception:", exc_info=True)

return UNKNOWN_ERROR

def parse_args(self, args: List[str]) -> Tuple[Values, List[str]]:
        # factored out for testability
        return self.parser.parse_args(args)

def main(self, args: List[str]) -> int:
        try:
            with self.main_context():
                return self._main(args)
        finally:
            logging.shutdown()

def _main(self, args: List[str]) -> int:
        # We must initialize this before the tempdir manager, otherwise the
        # configuration would not be accessible by the time we clean up the
        # tempdir manager.
        self.tempdir_registry = self.enter_context(tempdir_registry())
        # Intentionally set as early as possible so globally-managed temporary
        # directories are available to the rest of the code.
        self.enter_context(global_tempdir_manager())

options, args = self.parse_args(args)

# Set verbosity so that it can be used elsewhere.
        self.verbosity = options.verbose - options.quiet

reconfigure(no_color=options.no_color)
        level_number = setup_logging(
            verbosity=self.verbosity,
            no_color=options.no_color,
            user_log_file=options.log,
        )

always_enabled_features = set(options.features_enabled) & set(
            cmdoptions.ALWAYS_ENABLED_FEATURES
        )
        if always_enabled_features:
            logger.warning(
                "The following features are always enabled: %s. ",
                ", ".join(sorted(always_enabled_features)),
            )

# Make sure that the --python argument isn't specified after the
        # subcommand. We can tell, because if --python was specified,
        # we should only reach this point if we're running in the created
        # subprocess, which has the _PIP_RUNNING_IN_SUBPROCESS environment
        # variable set.
        if options.python and "_PIP_RUNNING_IN_SUBPROCESS" not in os.environ:
            logger.critical(
                "The --python option must be placed before the pip subcommand name"
            )
            sys.exit(ERROR)

# TODO: Try to get these passing down from the command?
        #       without resorting to os.environ to hold these.
        #       This also affects isolated builds and it should.

if options.no_input:
            os.environ["PIP_NO_INPUT"] = "1"

if options.exists_action:
            os.environ["PIP_EXISTS_ACTION"] = " ".join(options.exists_action)

if options.require_venv and not self.ignore_require_venv:
            # If a venv is required check if it can really be found
            if not running_under_virtualenv():
                logger.critical("Could not find an activated virtualenv (required).")
                sys.exit(VIRTUALENV_NOT_FOUND)

if options.cache_dir:
            options.cache_dir = normalize_path(options.cache_dir)
            if not check_path_owner(options.cache_dir):
                logger.warning(
                    "The directory '%s' or its parent directory is not owned "
                    "or is not writable by the current user. The cache "
                    "has been disabled. Check the permissions and owner of "
                    "that directory. If executing pip with sudo, you should "
                    "use sudo's -H flag.",
                    options.cache_dir,
                )
                options.cache_dir = None

return self._run_wrapper(level_number, options, args)

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2026-07-21 10:59:48
..	dir	-	root/root	drwxr-xr-x	2026-07-21 10:59:48
__pycache__	dir	-	root/root	drwxr-xr-x	2026-07-21 10:59:48
__init__.py	text/plain	132 B	root/root	-rw-r--r--	2026-06-16 08:48:19
autocompletion.py	text/plain	6.7 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
base_command.py	text/plain	8.09 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
cmdoptions.py	text/plain	29.4 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
command_context.py	text/x-script.python	774 B	root/root	-rw-r--r--	2026-06-16 08:48:19
index_command.py	text/plain	5.5 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
main.py	text/plain	2.75 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
main_parser.py	text/plain	4.24 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
parser.py	text/plain	10.57 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
progress_bars.py	text/x-script.python	2.66 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
req_command.py	text/plain	11.96 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
spinners.py	text/x-script.python	5 KB	root/root	-rw-r--r--	2026-06-16 08:48:19
status_codes.py	text/plain	116 B	root/root	-rw-r--r--	2026-06-16 08:48:19