Python os.path.isfile() Examples

def read(self):
        try:
            from PIL import Image
            from pyzbar.pyzbar import decode
            decoded_data = decode(Image.open(self.filename))
            if path.isfile(self.filename):
                remove(self.filename)
            try:
                url = urlparse(decoded_data[0].data.decode())
                query_params = parse_qsl(url.query)
                self._codes = dict(query_params)
                return self._codes.get("secret")
            except (KeyError, IndexError):
                Logger.error("Invalid QR image")
                return None
        except ImportError:
            from ..application import Application
            Application.USE_QRSCANNER = False
            QRReader.ZBAR_FOUND = False 

def isUpdatesAvailable(cls, path):
        if sys.version_info < (3, 0):
            return False
        # pylint: disable=broad-except
        if not os.path.isfile(os.path.join(path, "files.xml")):
            return True
        try:
            available = dict()
            for it in ET.parse(os.path.join(path, "files.xml")).iter():
                if it.tag == "File":
                    available[it.text] = datetime.datetime.strptime(it.attrib["Modified"], "%d-%m-%Y")

            path = NamedTemporaryFile()
            path.close()
            urllib.request.urlretrieve("https://www.gurux.fi/obis/files.xml", path.name)
            for it in ET.parse(path.name).iter():
                if it.tag == "File":
                    tmp = datetime.datetime.strptime(it.attrib["Modified"], "%d-%m-%Y")
                    if not it.text in available or available[it.text] != tmp:
                        return True
        except Exception as e:
            print(e)
            return True
        return False 

def ThreadSSH(self):
        try:
            self.session = pxssh.pxssh(encoding='utf-8')
            if (not path.isfile(self.settings['Password'])):
                self.session.login(gethostbyname(self.settings['Host']), self.settings['User'],
                self.settings['Password'],port=self.settings['Port'])
            else:
                self.session.login(gethostbyname(self.settings['Host']), self.settings['User'],
                ssh_key=self.settings['Password'],port=self.settings['Port'])

            if self.connection:
                self.status = '[{}]'.format(setcolor('ON',color='green'))
            self.activated = True
        except Exception, e:
            self.status = '[{}]'.format(setcolor('OFF',color='red'))
            self.activated = False 

def readManufacturerSettings(cls, manufacturers, path):
        # pylint: disable=broad-except
        manufacturers = []
        files = [f for f in listdir(path) if isfile(join(path, f))]
        if files:
            for it in files:
                if it.endswith(".obx"):
                    try:
                        manufacturers.append(cls.__parse(os.path.join(path, it)))
                    except Exception as e:
                        print(e)
                        continue

    #
    # Serialize manufacturer from the xml.
    #
    # @param in
    #            Input stream.
    # Serialized manufacturer.
    # 

def get_perf(filename):
    ''' run conlleval.pl perl script to obtain
    precision/recall and F1 score '''
    _conlleval = PREFIX + 'conlleval'
    if not isfile(_conlleval):
        #download('http://www-etud.iro.umontreal.ca/~mesnilgr/atis/conlleval.pl') 
        os.system('wget https://www.comp.nus.edu.sg/%7Ekanmy/courses/practicalNLP_2008/packages/conlleval.pl')
        chmod('conlleval.pl', stat.S_IRWXU) # give the execute permissions
    
    out = []
    proc = subprocess.Popen(["perl", _conlleval], stdin=subprocess.PIPE, stdout=subprocess.PIPE)
    stdout, _ = proc.communicate(open(filename).read())
    for line in stdout.split('\n'):
        if 'accuracy' in line:
            out = line.split()
            break
    
    # out = ['accuracy:', '16.26%;', 'precision:', '0.00%;', 'recall:', '0.00%;', 'FB1:', '0.00']
    precision = float(out[3][:-2])
    recall    = float(out[5][:-2])
    f1score   = float(out[7])

    return {'p':precision, 'r':recall, 'f1':f1score} 

def cvt_annotations(devkit_path, years, split, out_file):
    if not isinstance(years, list):
        years = [years]
    annotations = []
    for year in years:
        filelist = osp.join(devkit_path,
                            f'VOC{year}/ImageSets/Main/{split}.txt')
        if not osp.isfile(filelist):
            print(f'filelist does not exist: {filelist}, '
                  f'skip voc{year} {split}')
            return
        img_names = mmcv.list_from_file(filelist)
        xml_paths = [
            osp.join(devkit_path, f'VOC{year}/Annotations/{img_name}.xml')
            for img_name in img_names
        ]
        img_paths = [
            f'VOC{year}/JPEGImages/{img_name}.jpg' for img_name in img_names
        ]
        part_annotations = mmcv.track_progress(parse_xml,
                                               list(zip(xml_paths, img_paths)))
        annotations.extend(part_annotations)
    mmcv.dump(annotations, out_file)
    return annotations 

def compile_bundle_entry(self, spec, entry):
        """
        Handler for each entry for the bundle method of the compile
        process.  This copies the source file or directory into the
        build directory.
        """

        modname, source, target, modpath = entry
        bundled_modpath = {modname: modpath}
        bundled_target = {modname: target}
        export_module_name = []
        if isfile(source):
            export_module_name.append(modname)
            copy_target = join(spec[BUILD_DIR], target)
            if not exists(dirname(copy_target)):
                makedirs(dirname(copy_target))
            shutil.copy(source, copy_target)
        elif isdir(source):
            copy_target = join(spec[BUILD_DIR], modname)
            shutil.copytree(source, copy_target)

        return bundled_modpath, bundled_target, export_module_name 

def all_actions():
    """
    Returns a list of all available actions from the *.py files in the actions directory
    :return: ist of all available action
    """
    result = []
    directory = os.getcwd()
    while True:
        if any([entry for entry in listdir(directory) if entry == ACTIONS_DIR and isdir(os.path.join(directory, entry))]):
            break
        directory = os.path.abspath(os.path.join(directory, '..'))

    actions_dir = os.path.join(directory, ACTIONS_DIR)
    for f in listdir(actions_dir):
        if isfile(join(actions_dir, f)) and f.endswith("_{}.py".format(ACTION.lower())):
            module_name = ACTION_MODULE_NAME.format(f[0:-len(".py")])
            mod = get_action_module(module_name)
            cls = _get_action_class_from_module(mod)
            if cls is not None:
                action_name = cls[0][0:-len(ACTION)]
                result.append(action_name)
    return result 

def all_services():
    """
    Return as list of all supported service names
    :return: list of all supported service names
    """
    result = []
    for f in listdir(SERVICES_PATH):
        if isfile(join(SERVICES_PATH, f)) and f.endswith("_{}.py".format(SERVICE.lower())):
            module_name = SERVICE_MODULE_NAME.format(f[0:-len(".py")])
            service_module = _get_module(module_name)
            cls = _get_service_class(service_module)
            if cls is not None:
                service_name = cls[0][0:-len(SERVICE)]
                if service_name.lower() != "aws":
                    result.append(service_name)
    return result 

def all_handlers():
    global __actions
    if __actions is None:
        __actions = []
        current = abspath(os.getcwd())
        while True:
            if isdir(os.path.join(current, "handlers")):
                break
            parent = dirname(current)
            if parent == current:
                # at top level
                raise Exception("Could not find handlers directory")
            else:
                current = parent

        for f in listdir(os.path.join(current, "handlers")):
            if isfile(join(current, "handlers", f)) and f.endswith("_{}.py".format(HANDLER.lower())):
                module_name = HANDLERS_MODULE_NAME.format(f[0:-len(".py")])
                m = _get_module(module_name)
                cls = _get_handler_class(m)
                if cls is not None:
                    handler_name = cls[0]
                    __actions.append(handler_name)
    return __actions 

def parse_backup_tags(backup_dir, tag_name):
        """
        Static Method for returning the backup directory name and backup type
        :param backup_dir: The backup directory path
        :param tag_name: The tag name to search
        :return: Tuple of (backup directory, backup type) (2017-11-09_19-37-16, Full).
        :raises: RuntimeError if there is no such tag inside backup_tags.txt
        """
        if os.path.isfile("{}/backup_tags.txt".format(backup_dir)):
            with open('{}/backup_tags.txt'.format(backup_dir), 'r') as bcktags:
                f = bcktags.readlines()

            for i in f:
                splitted = i.split('\t')
                if tag_name == splitted[-1].rstrip("'\n\r").lstrip("'"):
                    return splitted[0], splitted[1]
            raise RuntimeError('There is no such tag for backups') 

def show_tags(backup_dir):
        if os.path.isfile("{}/backup_tags.txt".format(backup_dir)):
            with open('{}/backup_tags.txt'.format(backup_dir), 'r') as bcktags:
                from_file = bcktags.read()
            column_names = "{0}\t{1}\t{2}\t{3}\t{4}\tTAG\n".format(
                "Backup".ljust(19),
                "Type".ljust(4),
                "Status".ljust(2),
                "Completion_time".ljust(19),
                "Size")
            extra_str = "{}\n".format("-"*(len(column_names)+21))
            print(column_names + extra_str + from_file)
            logger.info(column_names + extra_str + from_file)
        else:
            logger.warning("Could not find backup_tags.txt inside given backup directory. Can't print tags.")
            print("WARNING: Could not find backup_tags.txt inside given backup directory. Can't print tags.") 

def convert_legacy_template(path):
    with open(path) as f:
        ta = f.read().strip().split('\n\n')

    groups = [parse_group(g) for g in ta]
    data = {'groups': [group_to_dict(g) for g in groups]}

    new_path = path[:-3] + 'yml'
    warning = ''
    if p.isfile(new_path):
        new_path = path[:-4] + '-converted.yml'
        warning = '(appended -converted to avoid collision)'

    with open(new_path, 'w') as nf:
        yaml.dump(data, nf, indent=4,  default_flow_style=False)

    os.remove(path)

    print " - {} > {} {}".format(path, new_path, warning) 

def __init__(self, senna_path, operations, encoding='utf-8'):
        self._encoding = encoding
        self._path = path.normpath(senna_path) + sep 
        
        # Verifies the existence of the executable on the self._path first    
        #senna_binary_file_1 = self.executable(self._path)
        exe_file_1 = self.executable(self._path)
        if not path.isfile(exe_file_1):
            # Check for the system environment 
            if 'SENNA' in environ:
                #self._path = path.join(environ['SENNA'],'')  
                self._path = path.normpath(environ['SENNA']) + sep 
                exe_file_2 = self.executable(self._path)
                if not path.isfile(exe_file_2):
                    raise OSError("Senna executable expected at %s or %s but not found" % (exe_file_1,exe_file_2))
        
        self.operations = operations 

def build_vocab(tokens, cache='vocab.pkl', max_size=50000):
    if not osp.isfile(cache):
        counter = Counter(tokens)
        words, _ = zip(*counter.most_common(max_size))
        words = [PAD_TOKEN, UNK_TOKEN] + list(words)
        token_to_index = dict(zip(words, range(len(words))))
        if START_TOKEN not in token_to_index:
            token_to_index[START_TOKEN] = len(token_to_index)
            words += [START_TOKEN]
        if END_TOKEN not in token_to_index:
            token_to_index[END_TOKEN] = len(token_to_index)
            words += [END_TOKEN]
        with open(cache, 'wb') as f:
            pickle.dump((token_to_index, words), f)
    else:
        with open(cache, 'rb') as f:
            token_to_index, words = pickle.load(f)

    return token_to_index, words 

def build_vocab(tokens, cache='vocab.pkl', max_size=50000):
    if not osp.isfile(cache):
        counter = Counter(tokens)
        words, _ = zip(*counter.most_common(max_size))
        words = [PAD_TOKEN, UNK_TOKEN] + list(words)
        token_to_index = dict(zip(words, range(len(words))))
        if START_TOKEN not in token_to_index:
            token_to_index[START_TOKEN] = len(token_to_index)
            words += [START_TOKEN]
        if END_TOKEN not in token_to_index:
            token_to_index[END_TOKEN] = len(token_to_index)
            words += [END_TOKEN]
        with open(cache, 'wb') as f:
            pickle.dump((token_to_index, words), f)
    else:
        with open(cache, 'rb') as f:
            token_to_index, words = pickle.load(f)

    return token_to_index, words 

def _load_options_from_inputs_spec(app_root, stanza_name):
    input_spec_file = 'inputs.conf.spec'
    file_path = op.join(app_root, 'README', input_spec_file)

    if not op.isfile(file_path):
        raise RuntimeError("README/%s doesn't exist" % input_spec_file)

    parser = configparser.RawConfigParser(allow_no_value=True)
    parser.read(file_path)
    options = list(parser.defaults().keys())
    stanza_prefix = '%s://' % stanza_name

    stanza_exist = False
    for section in parser.sections():
        if section == stanza_name or section.startswith(stanza_prefix):
            options.extend(parser.options(section))
            stanza_exist = True
    if not stanza_exist:
        raise RuntimeError("Stanza %s doesn't exist" % stanza_name)
    return set(options) 

def _load_options_from_inputs_spec(app_root, stanza_name):
    input_spec_file = 'inputs.conf.spec'
    file_path = op.join(app_root, 'README', input_spec_file)

    if not op.isfile(file_path):
        raise RuntimeError("README/%s doesn't exist" % input_spec_file)

    parser = configparser.RawConfigParser(allow_no_value=True)
    parser.read(file_path)
    options = list(parser.defaults().keys())
    stanza_prefix = '%s://' % stanza_name

    stanza_exist = False
    for section in parser.sections():
        if section == stanza_name or section.startswith(stanza_prefix):
            options.extend(parser.options(section))
            stanza_exist = True
    if not stanza_exist:
        raise RuntimeError("Stanza %s doesn't exist" % stanza_name)
    return set(options) 

def cvt_annotations(devkit_path, years, split, out_file):
    if not isinstance(years, list):
        years = [years]
    annotations = []
    for year in years:
        filelist = osp.join(devkit_path, 'VOC{}/ImageSets/Main/{}.txt'.format(
            year, split))
        if not osp.isfile(filelist):
            print('filelist does not exist: {}, skip voc{} {}'.format(
                filelist, year, split))
            return
        img_names = mmcv.list_from_file(filelist)
        xml_paths = [
            osp.join(devkit_path, 'VOC{}/Annotations/{}.xml'.format(
                year, img_name)) for img_name in img_names
        ]
        img_paths = [
            'VOC{}/JPEGImages/{}.jpg'.format(year, img_name)
            for img_name in img_names
        ]
        part_annotations = mmcv.track_progress(parse_xml,
                                               list(zip(xml_paths, img_paths)))
        annotations.extend(part_annotations)
    mmcv.dump(annotations, out_file)
    return annotations 

def load_ratings(file, sep='\t'):
    """
    Load ratings from file
    """
    if not isfile(file):
        print "File %s does not exist." % file
        sys.exit(1)
    f = open(file, 'r')
    # Filter based on movie ratings that have been seen (0 = not seen)
    ratings = filter(lambda r: r[2] > 0, [parse_rating(line, '\t')[1] for line in f])
    f.close()
    if not ratings:
        print "No ratings provided."
        sys.exit(1)
    else:
        return ratings 

def process_images(*, path, outfile):
    assert os.path.exists(path), "Input path doesn't exist"
    files = [f for f in listdir(path) if isfile(join(path, f))]
    print('Number of valid images is:', len(files))
    imgs = []
    for i in tqdm(range(len(files))):
        img = scipy.ndimage.imread(join(path, files[i]))

        assert isinstance(img, np.ndarray)

        img = img.astype('uint8')

        # HWC -> CHW, for use in PyTorch
        img = img.transpose(2, 0, 1)
        assert img.shape == (3, 64, 64)

        imgs.append(img)

    imgs = np.asarray(imgs).astype('uint8')
    assert imgs.shape[1:] == (3, 64, 64)

    np.save(outfile, imgs) 

def init_pg(pg_conn):
    """
    Initialize pg database
    """
    if pg_conn is None:
        print('I am unable to connect to the database')
        sys.exit(1)
    cur = pg_conn.cursor()

    sql_files = [f for f in listdir(SQL_SERVER_PATH) if isfile(join(SQL_SERVER_PATH, f))]

    for sql_file in sql_files:
        with open('%s/%s' % (SQL_SERVER_PATH, sql_file), 'r') as sql_model_file:
            cur.execute(sql_model_file.read())
            pg_conn.commit()

    cur.close()
    pg_conn.close() 

def install_hg(path):
    """ Install hook in Mercurial repository. """
    hook = op.join(path, 'hgrc')
    if not op.isfile(hook):
        open(hook, 'w+').close()

    c = ConfigParser()
    c.readfp(open(hook, 'r'))
    if not c.has_section('hooks'):
        c.add_section('hooks')

    if not c.has_option('hooks', 'commit'):
        c.set('hooks', 'commit', 'python:pylama.hooks.hg_hook')

    if not c.has_option('hooks', 'qrefresh'):
        c.set('hooks', 'qrefresh', 'python:pylama.hooks.hg_hook')

    c.write(open(hook, 'w+')) 

def check_dependencies():
    ettercap = popen('which ettercap').read().split("\n")
    dhcpd = popen('which dhcpd').read().split("\n")
    lista = [dhcpd[0],'/usr/sbin/airbase-ng',
    ettercap[0]]
    m = []
    for i in lista:
        m.append(path.isfile(i))
    for k,g in enumerate(m):
        if m[k] == False:
            if k == 0:
                print '[%s✘%s] DHCP not %sfound%s.'%(RED,ENDC,YELLOW,ENDC)
    for c in m:
        if c == False:
            exit(1)
        break 

def isFirstRun(cls, path):
        if not os.path.isdir(path):
            os.mkdir(path)
            return True
        if not os.path.isfile(os.path.join(path, "files.xml")):
            return True
        return False

    #
    # Check if there are any updates available in Gurux www server.
    #
    # @param path
    #            Settings directory.
    # Returns true if there are any updates available.
    # 

def _test_files_and_attrs(calc, dtype_out):
    assert isfile(calc.path_out[dtype_out])
    assert isfile(calc.path_tar_out)
    _test_output_attrs(calc, dtype_out) 

def assert_calc_files_exist(calcs, write_to_tar, dtypes_out_time):
    """Check that expected calcs were written to files"""
    for calc in calcs:
        for dtype_out_time in dtypes_out_time:
            assert isfile(calc.path_out[dtype_out_time])
            if write_to_tar:
                assert isfile(calc.path_tar_out)
            else:
                assert not isfile(calc.path_tar_out) 

def tearDown(self):
    if isfile(self.tempfile):
      remove(self.tempfile)
    if isdir(self.tempdir):
      rmtree(self.tempdir) 

def tearDown(self):
    if isfile(self.tempfile):
      remove(self.tempfile)
    if isdir(self.tempdir):
      rmtree(self.tempdir) 

def read(fname):

    here = path.join(path.abspath(path.dirname(__file__)), fname)
    txt = ''
    if (path.isfile(here)):
        # Get the long description from the README file
        with open(here, encoding='utf-8') as f:
            txt= f.read()
    return txt