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python3.11
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pip
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_internal
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cli
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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)
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