/
opt
/
alt
/
python37
/
lib
/
python3.7
/
site-packages
/
virtualenv
/
run
/
/opt/alt/python37/lib/python3.7/site-packages/virtualenv/run
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plugin/
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__pycache__/
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session.py
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__init__.py
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Edit:
/opt/alt/python37/lib/python3.7/site-packages/virtualenv/run/__init__.py
(6090B)
from __future__ import absolute_import, unicode_literals import logging import os from functools import partial from ..app_data import make_app_data from ..config.cli.parser import VirtualEnvConfigParser from ..report import LEVELS, setup_report from ..run.session import Session from ..seed.wheels.periodic_update import manual_upgrade from ..version import __version__ from .plugin.activators import ActivationSelector from .plugin.creators import CreatorSelector from .plugin.discovery import get_discover from .plugin.seeders import SeederSelector def cli_run(args, options=None, setup_logging=True, env=None): """ Create a virtual environment given some command line interface arguments. :param args: the command line arguments :param options: passing in a ``VirtualEnvOptions`` object allows return of the parsed options :param setup_logging: ``True`` if setup logging handlers, ``False`` to use handlers already registered :param env: environment variables to use :return: the session object of the creation (its structure for now is experimental and might change on short notice) """ env = os.environ if env is None else env of_session = session_via_cli(args, options, setup_logging, env) with of_session: of_session.run() return of_session def session_via_cli(args, options=None, setup_logging=True, env=None): """ Create a virtualenv session (same as cli_run, but this does not perform the creation). Use this if you just want to query what the virtual environment would look like, but not actually create it. :param args: the command line arguments :param options: passing in a ``VirtualEnvOptions`` object allows return of the parsed options :param setup_logging: ``True`` if setup logging handlers, ``False`` to use handlers already registered :param env: environment variables to use :return: the session object of the creation (its structure for now is experimental and might change on short notice) """ env = os.environ if env is None else env parser, elements = build_parser(args, options, setup_logging, env) options = parser.parse_args(args) creator, seeder, activators = tuple(e.create(options) for e in elements) # create types of_session = Session(options.verbosity, options.app_data, parser._interpreter, creator, seeder, activators) # noqa return of_session def build_parser(args=None, options=None, setup_logging=True, env=None): parser = VirtualEnvConfigParser(options, os.environ if env is None else env) add_version_flag(parser) parser.add_argument( "--with-traceback", dest="with_traceback", action="store_true", default=False, help="on failure also display the stacktrace internals of virtualenv", ) _do_report_setup(parser, args, setup_logging) options = load_app_data(args, parser, options) handle_extra_commands(options) discover = get_discover(parser, args) parser._interpreter = interpreter = discover.interpreter if interpreter is None: raise RuntimeError("failed to find interpreter for {}".format(discover)) elements = [ CreatorSelector(interpreter, parser), SeederSelector(interpreter, parser), ActivationSelector(interpreter, parser), ] options, _ = parser.parse_known_args(args) for element in elements: element.handle_selected_arg_parse(options) parser.enable_help() return parser, elements def build_parser_only(args=None): """Used to provide a parser for the doc generation""" return build_parser(args)[0] def handle_extra_commands(options): if options.upgrade_embed_wheels: result = manual_upgrade(options.app_data, options.env) raise SystemExit(result) def load_app_data(args, parser, options): parser.add_argument( "--read-only-app-data", action="store_true", help="use app data folder in read-only mode (write operations will fail with error)", ) options, _ = parser.parse_known_args(args, namespace=options) # here we need a write-able application data (e.g. the zipapp might need this for discovery cache) parser.add_argument( "--app-data", help="a data folder used as cache by the virtualenv", type=partial(make_app_data, read_only=options.read_only_app_data, env=options.env), default=make_app_data(None, read_only=options.read_only_app_data, env=options.env), ) parser.add_argument( "--reset-app-data", action="store_true", help="start with empty app data folder", ) parser.add_argument( "--upgrade-embed-wheels", action="store_true", help="trigger a manual update of the embedded wheels", ) options, _ = parser.parse_known_args(args, namespace=options) if options.reset_app_data: options.app_data.reset() return options def add_version_flag(parser): import virtualenv parser.add_argument( "--version", action="version", version="%(prog)s {} from {}".format(__version__, virtualenv.__file__), help="display the version of the virtualenv package and its location, then exit", ) def _do_report_setup(parser, args, setup_logging): level_map = ", ".join("{}={}".format(logging.getLevelName(l), c) for c, l in sorted(list(LEVELS.items()))) msg = "verbosity = verbose - quiet, default {}, mapping => {}" verbosity_group = parser.add_argument_group( title="verbosity", description=msg.format(logging.getLevelName(LEVELS[3]), level_map), ) verbosity = verbosity_group.add_mutually_exclusive_group() verbosity.add_argument("-v", "--verbose", action="count", dest="verbose", help="increase verbosity", default=2) verbosity.add_argument("-q", "--quiet", action="count", dest="quiet", help="decrease verbosity", default=0) option, _ = parser.parse_known_args(args) if setup_logging: setup_report(option.verbosity) __all__ = ( "cli_run", "session_via_cli", )
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cmd:
run