Python Options.python_executable方法代码示例

# 需要导入模块: from mypy.options import Options [as 别名]
# 或者: from mypy.options.Options import python_executable [as 别名]
    def test_executable_inference(self) -> None:
        """Test the --python-executable flag with --python-version"""
        sys_ver_str = '{ver.major}.{ver.minor}'.format(ver=sys.version_info)

        base = ['file.py']  # dummy file

        # test inference given one (infer the other)
        matching_version = base + ['--python-version={}'.format(sys_ver_str)]
        _, options = process_options(matching_version)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable == sys.executable

        matching_version = base + ['--python-executable={}'.format(sys.executable)]
        _, options = process_options(matching_version)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable == sys.executable

        # test inference given both
        matching_version = base + ['--python-version={}'.format(sys_ver_str),
                                   '--python-executable={}'.format(sys.executable)]
        _, options = process_options(matching_version)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable == sys.executable

        # test that --no-site-packages will disable executable inference
        matching_version = base + ['--python-version={}'.format(sys_ver_str),
                                   '--no-site-packages']
        _, options = process_options(matching_version)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable is None

        # Test setting python_version/executable from config file
        special_opts = argparse.Namespace()
        special_opts.python_executable = None
        special_opts.python_version = None
        special_opts.no_executable = None

        # first test inferring executable from version
        options = Options()
        options.python_executable = None
        options.python_version = sys.version_info[:2]
        infer_python_executable(options, special_opts)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable == sys.executable

        # then test inferring version from executable
        options = Options()
        options.python_executable = sys.executable
        infer_python_executable(options, special_opts)
        assert options.python_version == sys.version_info[:2]
        assert options.python_executable == sys.executable

# 需要导入模块: from mypy.options import Options [as 别名]
# 或者: from mypy.options.Options import python_executable [as 别名]
def infer_python_executable(options: Options,
                            special_opts: argparse.Namespace) -> None:
    """Infer the Python executable from the given version.

    This function mutates options based on special_opts to infer the correct Python executable
    to use.
    """
    # TODO: (ethanhs) Look at folding these checks and the site packages subprocess calls into
    # one subprocess call for speed.

    # Use the command line specified executable, or fall back to one set in the
    # config file. If an executable is not specified, infer it from the version
    # (unless no_executable is set)
    python_executable = special_opts.python_executable or options.python_executable

    if python_executable is None:
        if not special_opts.no_executable:
            python_executable = _python_executable_from_version(options.python_version)
    options.python_executable = python_executable

# 需要导入模块: from mypy.options import Options [as 别名]
# 或者: from mypy.options.Options import python_executable [as 别名]

#.........这里部分代码省略.........
        '-v', '--verbose', action='count', dest='verbosity',
        help="More verbose messages")
    general_group.add_argument(
        '-V', '--version', action='version',
        version='%(prog)s ' + __version__,
        help="Show program's version number and exit")

    config_group = parser.add_argument_group(
        title='Config file',
        description="Use a config file instead of command line arguments. "
                    "This is useful if you are using many flags or want "
                    "to set different options per each module.")
    config_group.add_argument(
        '--config-file',
        help="Configuration file, must have a [mypy] section "
             "(defaults to {})".format(', '.join(defaults.CONFIG_FILES)))
    add_invertible_flag('--warn-unused-configs', default=False, strict_flag=True,
                        help="Warn about unused '[mypy-<pattern>]' config sections",
                        group=config_group)

    imports_group = parser.add_argument_group(
        title='Import discovery',
        description="Configure how imports are discovered and followed.")
    imports_group.add_argument(
        '--ignore-missing-imports', action='store_true',
        help="Silently ignore imports of missing modules")
    imports_group.add_argument(
        '--follow-imports', choices=['normal', 'silent', 'skip', 'error'],
        default='normal', help="How to treat imports (default normal)")
    imports_group.add_argument(
        '--python-executable', action='store', metavar='EXECUTABLE',
        help="Python executable used for finding PEP 561 compliant installed"
             " packages and stubs",
        dest='special-opts:python_executable')
    imports_group.add_argument(
        '--no-site-packages', action='store_true',
        dest='special-opts:no_executable',
        help="Do not search for installed PEP 561 compliant packages")
    imports_group.add_argument(
        '--no-silence-site-packages', action='store_true',
        help="Do not silence errors in PEP 561 compliant installed packages")
    add_invertible_flag(
        '--namespace-packages', default=False,
        help="Support namespace packages (PEP 420, __init__.py-less)",
        group=imports_group)

    platform_group = parser.add_argument_group(
        title='Platform configuration',
        description="Type check code assuming it will be run under certain "
                    "runtime conditions. By default, mypy assumes your code "
                    "will be run using the same operating system and Python "
                    "version you are using to run mypy itself.")
    platform_group.add_argument(
        '--python-version', type=parse_version, metavar='x.y',
        help='Type check code assuming it will be running on Python x.y',
        dest='special-opts:python_version')
    platform_group.add_argument(
        '-2', '--py2', dest='special-opts:python_version', action='store_const',
        const=defaults.PYTHON2_VERSION,
        help="Use Python 2 mode (same as --python-version 2.7)")
    platform_group.add_argument(
        '--platform', action='store', metavar='PLATFORM',
        help="Type check special-cased code for the given OS platform "
             "(defaults to sys.platform)")
    platform_group.add_argument(
        '--always-true', metavar='NAME', action='append', default=[],