Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/virtualenv/run/__init__.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 from __future__ import absolute_import, unicode_literals |
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2 |
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3 import logging |
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4 import os |
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5 from functools import partial |
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6 |
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7 from ..app_data import make_app_data |
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8 from ..config.cli.parser import VirtualEnvConfigParser |
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9 from ..report import LEVELS, setup_report |
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10 from ..run.session import Session |
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11 from ..seed.wheels.periodic_update import manual_upgrade |
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12 from ..version import __version__ |
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13 from .plugin.activators import ActivationSelector |
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14 from .plugin.creators import CreatorSelector |
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15 from .plugin.discovery import get_discover |
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16 from .plugin.seeders import SeederSelector |
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17 |
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18 |
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19 def cli_run(args, options=None, setup_logging=True, env=None): |
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20 """ |
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21 Create a virtual environment given some command line interface arguments. |
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22 |
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23 :param args: the command line arguments |
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24 :param options: passing in a ``VirtualEnvOptions`` object allows return of the parsed options |
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25 :param setup_logging: ``True`` if setup logging handlers, ``False`` to use handlers already registered |
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26 :param env: environment variables to use |
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27 :return: the session object of the creation (its structure for now is experimental and might change on short notice) |
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28 """ |
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29 env = os.environ if env is None else env |
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30 of_session = session_via_cli(args, options, setup_logging, env) |
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31 with of_session: |
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32 of_session.run() |
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33 return of_session |
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34 |
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35 |
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36 def session_via_cli(args, options=None, setup_logging=True, env=None): |
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37 """ |
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38 Create a virtualenv session (same as cli_run, but this does not perform the creation). Use this if you just want to |
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39 query what the virtual environment would look like, but not actually create it. |
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40 |
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41 :param args: the command line arguments |
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42 :param options: passing in a ``VirtualEnvOptions`` object allows return of the parsed options |
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43 :param setup_logging: ``True`` if setup logging handlers, ``False`` to use handlers already registered |
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44 :param env: environment variables to use |
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45 :return: the session object of the creation (its structure for now is experimental and might change on short notice) |
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46 """ |
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47 env = os.environ if env is None else env |
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48 parser, elements = build_parser(args, options, setup_logging, env) |
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49 options = parser.parse_args(args) |
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50 creator, seeder, activators = tuple(e.create(options) for e in elements) # create types |
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51 of_session = Session(options.verbosity, options.app_data, parser._interpreter, creator, seeder, activators) # noqa |
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52 return of_session |
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53 |
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54 |
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55 def build_parser(args=None, options=None, setup_logging=True, env=None): |
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56 parser = VirtualEnvConfigParser(options, os.environ if env is None else env) |
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57 add_version_flag(parser) |
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58 parser.add_argument( |
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59 "--with-traceback", |
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60 dest="with_traceback", |
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61 action="store_true", |
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62 default=False, |
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63 help="on failure also display the stacktrace internals of virtualenv", |
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64 ) |
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65 _do_report_setup(parser, args, setup_logging) |
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66 options = load_app_data(args, parser, options) |
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67 handle_extra_commands(options) |
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68 |
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69 discover = get_discover(parser, args) |
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70 parser._interpreter = interpreter = discover.interpreter |
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71 if interpreter is None: |
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72 raise RuntimeError("failed to find interpreter for {}".format(discover)) |
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73 elements = [ |
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74 CreatorSelector(interpreter, parser), |
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75 SeederSelector(interpreter, parser), |
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76 ActivationSelector(interpreter, parser), |
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77 ] |
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78 options, _ = parser.parse_known_args(args) |
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79 for element in elements: |
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80 element.handle_selected_arg_parse(options) |
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81 parser.enable_help() |
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82 return parser, elements |
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83 |
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84 |
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85 def build_parser_only(args=None): |
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86 """Used to provide a parser for the doc generation""" |
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87 return build_parser(args)[0] |
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88 |
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89 |
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90 def handle_extra_commands(options): |
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91 if options.upgrade_embed_wheels: |
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92 result = manual_upgrade(options.app_data, options.env) |
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93 raise SystemExit(result) |
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94 |
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95 |
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96 def load_app_data(args, parser, options): |
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97 parser.add_argument( |
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98 "--read-only-app-data", |
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99 action="store_true", |
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100 help="use app data folder in read-only mode (write operations will fail with error)", |
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101 ) |
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102 options, _ = parser.parse_known_args(args, namespace=options) |
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103 |
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104 # here we need a write-able application data (e.g. the zipapp might need this for discovery cache) |
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105 parser.add_argument( |
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106 "--app-data", |
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107 help="a data folder used as cache by the virtualenv", |
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108 type=partial(make_app_data, read_only=options.read_only_app_data, env=options.env), |
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109 default=make_app_data(None, read_only=options.read_only_app_data, env=options.env), |
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110 ) |
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111 parser.add_argument( |
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112 "--reset-app-data", |
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113 action="store_true", |
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114 help="start with empty app data folder", |
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115 ) |
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116 parser.add_argument( |
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117 "--upgrade-embed-wheels", |
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118 action="store_true", |
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119 help="trigger a manual update of the embedded wheels", |
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120 ) |
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121 options, _ = parser.parse_known_args(args, namespace=options) |
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122 if options.reset_app_data: |
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123 options.app_data.reset() |
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124 return options |
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125 |
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126 |
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127 def add_version_flag(parser): |
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128 import virtualenv |
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129 |
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130 parser.add_argument( |
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131 "--version", |
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132 action="version", |
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133 version="%(prog)s {} from {}".format(__version__, virtualenv.__file__), |
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134 help="display the version of the virtualenv package and its location, then exit", |
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135 ) |
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136 |
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137 |
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138 def _do_report_setup(parser, args, setup_logging): |
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139 level_map = ", ".join("{}={}".format(logging.getLevelName(l), c) for c, l in sorted(list(LEVELS.items()))) |
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140 msg = "verbosity = verbose - quiet, default {}, mapping => {}" |
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141 verbosity_group = parser.add_argument_group( |
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142 title="verbosity", |
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143 description=msg.format(logging.getLevelName(LEVELS[3]), level_map), |
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144 ) |
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145 verbosity = verbosity_group.add_mutually_exclusive_group() |
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146 verbosity.add_argument("-v", "--verbose", action="count", dest="verbose", help="increase verbosity", default=2) |
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147 verbosity.add_argument("-q", "--quiet", action="count", dest="quiet", help="decrease verbosity", default=0) |
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148 option, _ = parser.parse_known_args(args) |
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149 if setup_logging: |
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150 setup_report(option.verbosity) |
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151 |
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152 |
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153 __all__ = ( |
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154 "cli_run", |
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155 "session_via_cli", |
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156 ) |