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How to use load_version_data method in tox

Best Python code snippet using tox_python

versions.py

Source:versions.py

...16    # New Python installer introduced in CPython 3.5.17    # Usage: https://docs.python.org/3/using/windows.html#installing-without-ui18    cpython = 'cpython'19VERSIONS_DIR_PATH = pathlib.Path(__file__).with_name('versions').resolve()20def load_version_data(name):21    try:22        with VERSIONS_DIR_PATH.joinpath('{}.json'.format(name)).open() as f:23            data = json.load(f)24    except FileNotFoundError:25        raise VersionNotFoundError(name)26    return data27@attr.s28class Version:29    name = attr.ib()30    url = attr.ib()31    md5_sum = attr.ib()32    version_info = attr.ib(convert=tuple)33    product_codes = attr.ib(default=attr.Factory(dict))34    forced_32 = attr.ib(default=False)35    def __str__(self):36        return 'Python {}'.format(self.name)37    @property38    def arch_free_name(self):39        return self.name.split('-', 1)[0]40    @property41    def script_version_names(self):42        # Use set to avoid duplicates.43        if self.forced_32:44            return {self.name, self.arch_free_name}45        return {self.name}46    @property47    def python_commands(self):48        dirpath = configs.get_cmd_dir_path()49        return [50            dirpath.joinpath('python{}.exe'.format(name))51            for name in self.script_version_names52        ]53    @property54    def pip_commands(self):55        dirpath = configs.get_cmd_dir_path()56        return [57            dirpath.joinpath('pip{}.exe'.format(name))58            for name in self.script_version_names59        ]60    @property61    def python_major_command(self):62        dirpath = configs.get_scripts_dir_path()63        return dirpath.joinpath('python{}.exe'.format(self.version_info[0]))64    def get_installation(self):65        path = metadata.get_install_path(self.name).resolve(strict=True)66        return installations.Installation(path=path)67    def is_installed(self):68        try:69            exists = metadata.get_install_path(self.name).exists()70        except FileNotFoundError:71            return False72        return exists73    def check_installer(self, data):74        checksum = hashlib.md5(data).hexdigest()75        assert checksum == self.md5_sum, \76            'expect checksum {}, got {}'.format(self.md5_sum, checksum)77    def get_target_for_install(self):78        return pathlib.Path(79            os.environ['LocalAppData'], 'Programs', 'Python',80            'Python{}'.format(self.name.replace('.', '')),81        )82class CPythonMSIVersion(Version):83    @classmethod84    def load(cls, name, data, *, force_32):85        variant = data['x86' if force_32 else 'amd64']86        return cls(87            name=name,88            version_info=data['version_info'],89            url=variant['url'],90            md5_sum=variant['md5_sum'],91            product_codes=variant.get('product_codes', {}),92        )93    def _run_installer(self, cmd, target_dirpath):94        features = ['DefaultFeature', 'PrivateCRT', 'TclTk', 'pip_feature']95        parts = [   # Argument ordering is very important.96            # Options and required parameters.97            'msiexec', '/i', '"{}"'.format(cmd),98            # Optional parameters and flags.99            '/qb', 'TARGETDIR="{}"'.format(target_dirpath),100            'ADDLOCAL={}'.format(','.join(features)),101            # This does not do what you think. DO NOT SUPPLY IT.102            # The installer is per-user by default.103            # 'ALLUSERS=0',104        ]105        subprocess.check_call(106            ' '.join(parts),107            shell=True,     # So we don't need to know where msiexec is.108        )109    def install(self, cmd):110        dirpath = self.get_target_for_install()111        self._run_installer(cmd, dirpath)112        return dirpath113    def upgrade(self, cmd):114        # There is no way to know what was installed from the previous MSI115        # installer; all we can do is installing what we want to the location116        # we want, and leave the old version installation untouched.117        self._run_installer(cmd, self.get_installation().path)118    def get_cached_uninstaller(self):119        info = self.get_installation().get_version_info()120        try:121            return self.product_codes['{0[0]}.{0[1]}.{0[2]}'.format(info)]122        except (IndexError, KeyError, TypeError):123            return metadata.find_uninstaller_id(self.name)124    def uninstall(self, cmd):125        subprocess.check_call('msiexec /x "{}" /qb'.format(cmd), shell=True)126class CPythonVersion(Version):127    @classmethod128    def load(cls, name, data, *, force_32):129        forced_32 = False130        if force_32 and not name.endswith('-32'):131            name = '{}-32'.format(name)132            data = load_version_data(name)133            forced_32 = True134        return cls(135            name=name,136            version_info=data['version_info'],137            url=data['url'],138            md5_sum=data['md5_sum'],139            forced_32=forced_32,140        )141    def install(self, cmd):142        dirpath = self.get_target_for_install()143        subprocess.check_call([144            cmd, '/passive', 'InstallAllUsers=0',145            'DefaultJustForMeTargetDir={}'.format(dirpath),146            'AssociateFiles=0', 'PrependPath=0', 'Shortcuts=0',147            'Include_doc=0', 'Include_launcher=0', 'Include_test=0',148            'Include_tools=0', 'InstallLauncherAllUsers=0',149        ])150        return dirpath151    def upgrade(self, cmd):152        # The installer handles all feature detection for us.153        subprocess.check_call([cmd, '/passive'])154    def get_cached_uninstaller(self):155        return metadata.get_bundle_cache_path(self.name)156    def uninstall(self, cmd):157        subprocess.check_call([cmd, '/uninstall', '/passive'])158def get_version(name, *, force_32):159    data = load_version_data(name)160    installer_type = InstallerType(data['type'])161    klass = {162        InstallerType.cpython_msi: CPythonMSIVersion,163        InstallerType.cpython: CPythonVersion,164    }[installer_type]165    return klass.load(name, data, force_32=force_32)166VERSION_NAME_RE = re.compile(r'^\d+\.\d+(:?\-32)?$')167def get_versions():168    return [169        get_version(p.stem, force_32=False)170        for p in VERSIONS_DIR_PATH.iterdir()171        if p.suffix == '.json' and VERSION_NAME_RE.match(p.stem)...

pep514.py

Source:pep514.py

...48            if spec is not None:49                yield spec50def process_tag(hive_name, company, company_key, tag, default_arch):51    with winreg.OpenKeyEx(company_key, tag) as tag_key:52        version = load_version_data(hive_name, company, tag, tag_key)53        if version is not None:  # if failed to get version bail54            major, minor, _ = version55            arch = load_arch_data(hive_name, company, tag, tag_key, default_arch)56            if arch is not None:57                exe_data = load_exe(hive_name, company, company_key, tag)58                if exe_data is not None:59                    exe, args = exe_data60                    return company, major, minor, arch, exe, args61def load_exe(hive_name, company, company_key, tag):62    key_path = "{}/{}/{}".format(hive_name, company, tag)63    try:64        with winreg.OpenKeyEx(company_key, r"{}\InstallPath".format(tag)) as ip_key:65            with ip_key:66                exe = get_value(ip_key, "ExecutablePath")67                if exe is None:68                    ip = get_value(ip_key, None)69                    if ip is None:70                        msg(key_path, "no ExecutablePath or default for it")71                    else:72                        exe = os.path.join(ip, str("python.exe"))73                if exe is not None and os.path.exists(exe):74                    args = get_value(ip_key, "ExecutableArguments")75                    return exe, args76                else:77                    msg(key_path, "could not load exe with value {}".format(exe))78    except OSError:79        msg("{}/{}".format(key_path, "InstallPath"), "missing")80    return None81def load_arch_data(hive_name, company, tag, tag_key, default_arch):82    arch_str = get_value(tag_key, "SysArchitecture")83    if arch_str is not None:84        key_path = "{}/{}/{}/SysArchitecture".format(hive_name, company, tag)85        try:86            return parse_arch(arch_str)87        except ValueError as sys_arch:88            msg(key_path, sys_arch)89    return default_arch90def parse_arch(arch_str):91    if isinstance(arch_str, six.string_types):92        match = re.match(r"^(\d+)bit$", arch_str)93        if match:94            return int(next(iter(match.groups())))95        error = "invalid format {}".format(arch_str)96    else:97        error = "arch is not string: {}".format(repr(arch_str))98    raise ValueError(error)99def load_version_data(hive_name, company, tag, tag_key):100    for candidate, key_path in [101        (get_value(tag_key, "SysVersion"), "{}/{}/{}/SysVersion".format(hive_name, company, tag)),102        (tag, "{}/{}/{}".format(hive_name, company, tag)),103    ]:104        if candidate is not None:105            try:106                return parse_version(candidate)107            except ValueError as sys_version:108                msg(key_path, sys_version)109    return None110def parse_version(version_str):111    if isinstance(version_str, six.string_types):112        match = re.match(r"^(\d+)(?:\.(\d+))?(?:\.(\d+))?$", version_str)113        if match:...

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