Python sys.path() Examples

def read_process(cmd, args=''):
    fullcmd = '%s %s' % (cmd, args)
    pipeout = popen(fullcmd)
    try:
        firstline = pipeout.readline()
        cmd_not_found = re.search(
            b'(not recognized|No such file|not found)',
            firstline,
            re.IGNORECASE
        )
        if cmd_not_found:
            raise IOError('%s must be on your system path.' % cmd)
        output = firstline + pipeout.read()
    finally:
        pipeout.close()
    return output 

def cachedir(self):
        """Path to workflow's cache directory.

        The cache directory is a subdirectory of Alfred's own cache directory
        in ``~/Library/Caches``. The full path is:

        ``~/Library/Caches/com.runningwithcrayons.Alfred-X/Workflow Data/<bundle id>``

        ``Alfred-X`` may be ``Alfred-2`` or ``Alfred-3``.

        :returns: full path to workflow's cache directory
        :rtype: ``unicode``

        """
        if self.alfred_env.get('workflow_cache'):
            dirpath = self.alfred_env.get('workflow_cache')

        else:
            dirpath = self._default_cachedir

        return self._create(dirpath) 

def cache_data(self, name, data):
        """Save ``data`` to cache under ``name``.

        If ``data`` is ``None``, the corresponding cache file will be
        deleted.

        :param name: name of datastore
        :param data: data to store. This may be any object supported by
                the cache serializer

        """
        serializer = manager.serializer(self.cache_serializer)

        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))

        if data is None:
            if os.path.exists(cache_path):
                os.unlink(cache_path)
                self.logger.debug('deleted cache file: %s', cache_path)
            return

        with atomic_writer(cache_path, 'wb') as file_obj:
            serializer.dump(data, file_obj)

        self.logger.debug('cached data: %s', cache_path) 

def _delete_directory_contents(self, dirpath, filter_func):
        """Delete all files in a directory.

        :param dirpath: path to directory to clear
        :type dirpath: ``unicode`` or ``str``
        :param filter_func function to determine whether a file shall be
            deleted or not.
        :type filter_func ``callable``

        """
        if os.path.exists(dirpath):
            for filename in os.listdir(dirpath):
                if not filter_func(filename):
                    continue
                path = os.path.join(dirpath, filename)
                if os.path.isdir(path):
                    shutil.rmtree(path)
                else:
                    os.unlink(path)
                self.logger.debug('deleted : %r', path) 

def start(self):
        opts = ''.join(['    PythonOption %s %s\n' % (k, v)
                        for k, v in self.opts])
        conf_data = self.template % {'port': self.port,
                                     'loc': self.loc,
                                     'opts': opts,
                                     'handler': self.handler,
                                     }

        mpconf = os.path.join(os.path.dirname(__file__), 'cpmodpy.conf')
        f = open(mpconf, 'wb')
        try:
            f.write(conf_data)
        finally:
            f.close()

        response = read_process(self.apache_path, '-k start -f %s' % mpconf)
        self.ready = True
        return response 

def _extend_pythonpath(env):
        """Prepend current working dir to PATH environment variable if needed.

        If sys.path[0] is an empty string, the interpreter was likely
        invoked with -m and the effective path is about to change on
        re-exec.  Add the current directory to $PYTHONPATH to ensure
        that the new process sees the same path.

        This issue cannot be addressed in the general case because
        Python cannot reliably reconstruct the
        original command line (http://bugs.python.org/issue14208).

        (This idea filched from tornado.autoreload)
        """
        path_prefix = '.' + os.pathsep
        existing_path = env.get('PYTHONPATH', '')
        needs_patch = (
            sys.path[0] == '' and
            not existing_path.startswith(path_prefix)
        )

        if needs_patch:
            env['PYTHONPATH'] = path_prefix + existing_path 

def _receiver(conn,stdout):

    while True:
        try:
            line = conn.recv()

            if line == "":
                continue

            _write(stdout, line)
            ''' example: announce route 1.2.3.4 next-hop 5.6.7.8 as-path [ 100 200 ] '''

            recvLogger.debug(line)

        except:
            pass 

def main():
    global arpListener, config

    parser = argparse.ArgumentParser()
    parser.add_argument('dir', help='the directory of the example')
    args = parser.parse_args()

    # locate config file
    config_file = os.path.join(os.path.dirname(os.path.realpath(__file__)),"..","examples",args.dir,"config","sdx_global.cfg")

    logger.info("Reading config file %s", config_file)
    config = parse_config(config_file)

    logger.info("Starting ARP Listener")
    arpListener = ArpListener()
    ap_thread = Thread(target=arpListener.start)
    ap_thread.start()

    # start pctrl listener in foreground
    logger.info("Starting PCTRL Listener")
    pctrlListener = PctrlListener()
    pctrlListener.start() 

def test_distro_detection(self):
        def os_path_exists(f):
            if f.endswith('multibootusb.log'):
                return False
            return True
        os_path_exists_mock = MM()
        log_mock = MM()
        @patch('os.path.exists', os_path_exists)
        @patch('scripts.distro.log', log_mock)
        def _():
            fn = distro.detect_iso_from_file_list
            assert fn(['BOOT.wim', 'Sources']) == 'Windows'
            assert fn(['BOOT.wim', 'Sause']) is None
            assert fn(['config.isoclient', 'foo']) == 'opensuse'
            assert fn(['bar', 'dban', 'foo']) == 'slitaz'
            assert fn(['memtest.img']) == 'memtest'
            assert fn(['mt86.png','isolinux']) == 'raw_iso'
            assert fn(['menu.lst']) == 'grub4dos'
            assert fn(['bootwiz.cfg', 'bootmenu_logo.png']) == \
                'grub4dos_iso'
        _() 

def plot_examples(data_loader, model, epoch, plotter, ind = [0, 10, 20]):

    # switch to evaluate mode
    model.eval()

    for i, (g, h, e, target) in enumerate(data_loader):
        if i in ind:
            subfolder_path = 'batch_' + str(i) + '_t_' + str(int(target[0][0])) + '/epoch_' + str(epoch) + '/'
            if not os.path.isdir(args.plotPath + subfolder_path):
                os.makedirs(args.plotPath + subfolder_path)

            num_nodes = torch.sum(torch.sum(torch.abs(h[0, :, :]), 1) > 0)
            am = g[0, 0:num_nodes, 0:num_nodes].numpy()
            pos = h[0, 0:num_nodes, :].numpy()

            plotter.plot_graph(am, position=pos, fig_name=subfolder_path+str(i) + '_input.png')

            # Prepare input data
            if args.cuda:
                g, h, e, target = g.cuda(), h.cuda(), e.cuda(), target.cuda()
            g, h, e, target = Variable(g), Variable(h), Variable(e), Variable(target)

            # Compute output
            model(g, h, e, lambda cls, id: plotter.plot_graph(am, position=pos, cls=cls,
                                                          fig_name=subfolder_path+ id)) 

def cd(self, message, conn):
        message = message.split()[1]                          # 截取目录名
        # 如果是新连接或者下载上传文件后的发送则 不切换 只将当前工作目录发送过去
        if message != 'same':
            f = r'./' + message
            os.chdir(f)
        # path = ''
        path = os.getcwd().split('\\')                        # 当前工作目录
        for i in range(len(path)):
            if path[i] == 'resources':
                break
        pat = ''
        for j in range(i, len(path)):
            pat = pat + path[j] + ' '
        pat = '\\'.join(pat.split())
        # 如果切换目录超出范围则退回切换前目录
        if 'resources' not in path:
            f = r'./resources'
            os.chdir(f)
            pat = 'resources'
        conn.send(pat.encode())

    # 判断输入的命令并执行对应的函数 

def run_apidoc(_):
    here = os.path.dirname(__file__)
    out = os.path.abspath(os.path.join(here, 'apidocs'))
    src = os.path.abspath(os.path.join(here, '..', '{{ cookiecutter.project_slug }}'))

    ignore_paths = []

    argv = [
        "-f",
        "-T",
        "-e",
        "-M",
        "-o", out,
        src
    ] + ignore_paths

    try:
        # Sphinx 1.7+
        from sphinx.ext import apidoc
        apidoc.main(argv)
    except ImportError:
        # Sphinx 1.6 (and earlier)
        from sphinx import apidoc
        argv.insert(0, apidoc.__file__)
        apidoc.main(argv) 

def has_system_site_packages(interpreter):
    # TODO: unit-test
    system_site_packages = check_output((
        interpreter,
        '-c',
        # stolen directly from virtualenv's site.py
        """\
import site, os.path
print(
    0
    if os.path.exists(
        os.path.join(os.path.dirname(site.__file__), 'no-global-site-packages.txt')
    ) else
    1
)"""
    ))
    system_site_packages = int(system_site_packages)
    assert system_site_packages in (0, 1)
    return bool(system_site_packages) 

def test_write_csv(self):
        filename = os.path.join(sys.path[0], "test_csv_writing.csv")
        overview = {
            "this": [1, 2],
            "is": [3, 4],
            "a": [5, 6],
            "test": [7, 8]}

        Export.Export._write_csv(filename, overview)

        with open(filename, "r") as test_csv:
            reader = csv.reader(test_csv)
            test_dict = dict((header, []) for header in next(reader))
            for row in reader:
                for row_index, key in enumerate(test_dict.keys()):
                    test_dict[key].append(int(row[row_index]))

        assert test_dict == overview
        os.remove(filename) 

def test_rmtree_test(self):
        path = mkdtemp(self)
        utils.rmtree(path)
        self.assertFalse(exists(path))
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter('always')
            utils.rmtree(path)
            self.assertFalse(w)

        utils.stub_item_attr_value(
            self, utils, 'rmtree_', utils.fake_error(IOError))
        path2 = mkdtemp(self)

        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter('always')
            utils.rmtree(path2)
            self.assertIn("rmtree failed to remove", str(w[-1].message)) 

def __init__(self, directive, name, indent=u''):
        # Monkey path the Method and Function documenters
        sphinx_app.add_autodocumenter(OutlineMethodDocumenter)
        sphinx_app.add_autodocumenter(OutlineFunctionDocumenter)
        autodoc.ModuleDocumenter.__init__(self, directive, name, indent) 

def read(*parts):
    """
    Build an absolute path from *parts* and and return the contents of the
    resulting file.  Assume UTF-8 encoding.
    """
    with codecs.open(os.path.join(HERE, *parts), "rb", "utf-8") as f:
        return f.read() 

def __init__(self, filepath, defaults=None):
        """Create new :class:`Settings` object."""
        super(Settings, self).__init__()
        self._filepath = filepath
        self._nosave = False
        self._original = {}
        if os.path.exists(self._filepath):
            self._load()
        elif defaults:
            for key, val in defaults.items():
                self[key] = val
            self.save()  # save default settings 

def _default_cachedir(self):
        """Alfred 2's default cache directory."""
        return os.path.join(
            os.path.expanduser(
                '~/Library/Caches/com.runningwithcrayons.Alfred-2/'
                'Workflow Data/'),
            self.bundleid) 

def _default_datadir(self):
        """Alfred 2's default data directory."""
        return os.path.join(os.path.expanduser(
            '~/Library/Application Support/Alfred 2/Workflow Data/'),
            self.bundleid) 

def workflowdir(self):
        """Path to workflow's root directory (where ``info.plist`` is).

        :returns: full path to workflow root directory
        :rtype: ``unicode``

        """
        if not self._workflowdir:
            # Try the working directory first, then the directory
            # the library is in. CWD will be the workflow root if
            # a workflow is being run in Alfred
            candidates = [
                os.path.abspath(os.getcwdu()),
                os.path.dirname(os.path.abspath(os.path.dirname(__file__)))]

            # climb the directory tree until we find `info.plist`
            for dirpath in candidates:

                # Ensure directory path is Unicode
                dirpath = self.decode(dirpath)

                while True:
                    if os.path.exists(os.path.join(dirpath, 'info.plist')):
                        self._workflowdir = dirpath
                        break

                    elif dirpath == '/':
                        # no `info.plist` found
                        break

                    # Check the parent directory
                    dirpath = os.path.dirname(dirpath)

                # No need to check other candidates
                if self._workflowdir:
                    break

            if not self._workflowdir:
                raise IOError("'info.plist' not found in directory tree")

        return self._workflowdir 

def cachefile(self, filename):
        """Path to ``filename`` in workflow's cache directory.

        Return absolute path to ``filename`` within your workflow's
        :attr:`cache directory <Workflow.cachedir>`.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within cache directory
        :rtype: ``unicode``

        """
        return os.path.join(self.cachedir, filename) 

def datafile(self, filename):
        """Path to ``filename`` in workflow's data directory.

        Return absolute path to ``filename`` within your workflow's
        :attr:`data directory <Workflow.datadir>`.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within data directory
        :rtype: ``unicode``

        """
        return os.path.join(self.datadir, filename) 

def workflowfile(self, filename):
        """Return full path to ``filename`` in workflow's root directory.

        :param filename: basename of file
        :type filename: ``unicode``
        :returns: full path to file within data directory
        :rtype: ``unicode``

        """
        return os.path.join(self.workflowdir, filename) 

def settings_path(self):
        """Path to settings file within workflow's data directory.

        :returns: path to ``settings.json`` file
        :rtype: ``unicode``

        """
        if not self._settings_path:
            self._settings_path = self.datafile('settings.json')
        return self._settings_path 

def cached_data(self, name, data_func=None, max_age=60):
        """Return cached data if younger than ``max_age`` seconds.

        Retrieve data from cache or re-generate and re-cache data if
        stale/non-existant. If ``max_age`` is 0, return cached data no
        matter how old.

        :param name: name of datastore
        :param data_func: function to (re-)generate data.
        :type data_func: ``callable``
        :param max_age: maximum age of cached data in seconds
        :type max_age: ``int``
        :returns: cached data, return value of ``data_func`` or ``None``
            if ``data_func`` is not set

        """
        serializer = manager.serializer(self.cache_serializer)

        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))
        age = self.cached_data_age(name)

        if (age < max_age or max_age == 0) and os.path.exists(cache_path):

            with open(cache_path, 'rb') as file_obj:
                self.logger.debug('loading cached data: %s', cache_path)
                return serializer.load(file_obj)

        if not data_func:
            return None

        data = data_func()
        self.cache_data(name, data)

        return data 

def cached_data_age(self, name):
        """Return age in seconds of cache `name` or 0 if cache doesn't exist.

        :param name: name of datastore
        :type name: ``unicode``
        :returns: age of datastore in seconds
        :rtype: ``int``

        """
        cache_path = self.cachefile('%s.%s' % (name, self.cache_serializer))

        if not os.path.exists(cache_path):
            return 0

        return time.time() - os.stat(cache_path).st_mtime 

def start_update(self):
        """Check for update and download and install new workflow file.

        .. versionadded:: 1.9

        See :ref:`guide-updates` in the :ref:`user-manual` for detailed
        information on how to enable your workflow to update itself.

        :returns: ``True`` if an update is available and will be
            installed, else ``False``

        """
        import update

        github_slug = self._update_settings['github_slug']
        # version = self._update_settings['version']
        version = str(self.version)

        if not update.check_update(github_slug, version, self.prereleases):
            return False

        from background import run_in_background

        # update.py is adjacent to this file
        update_script = os.path.join(os.path.dirname(__file__),
                                     b'update.py')

        cmd = ['/usr/bin/python', update_script, 'install', github_slug,
               version]

        if self.prereleases:
            cmd.append('--prereleases')

        self.logger.debug('downloading update ...')
        run_in_background('__workflow_update_install', cmd)

        return True

    ####################################################################
    # Keychain password storage methods
    #################################################################### 

def clear_settings(self):
        """Delete workflow's :attr:`settings_path`."""
        if os.path.exists(self.settings_path):
            os.unlink(self.settings_path)
            self.logger.debug('deleted : %r', self.settings_path) 

def decode(self, text, encoding=None, normalization=None):
        """Return ``text`` as normalised unicode.

        If ``encoding`` and/or ``normalization`` is ``None``, the
        ``input_encoding``and ``normalization`` parameters passed to
        :class:`Workflow` are used.

        :param text: string
        :type text: encoded or Unicode string. If ``text`` is already a
            Unicode string, it will only be normalised.
        :param encoding: The text encoding to use to decode ``text`` to
            Unicode.
        :type encoding: ``unicode`` or ``None``
        :param normalization: The nomalisation form to apply to ``text``.
        :type normalization: ``unicode`` or ``None``
        :returns: decoded and normalised ``unicode``

        :class:`Workflow` uses "NFC" normalisation by default. This is the
        standard for Python and will work well with data from the web (via
        :mod:`~workflow.web` or :mod:`json`).

        macOS, on the other hand, uses "NFD" normalisation (nearly), so data
        coming from the system (e.g. via :mod:`subprocess` or
        :func:`os.listdir`/:mod:`os.path`) may not match. You should either
        normalise this data, too, or change the default normalisation used by
        :class:`Workflow`.

        """
        encoding = encoding or self._input_encoding
        normalization = normalization or self._normalizsation
        if not isinstance(text, unicode):
            text = unicode(text, encoding)
        return unicodedata.normalize(normalization, text)