Python webbrowser.Error() Examples

def _get_browser_controller() -> webbrowser.BaseBrowser:

        if get_user_preference("browser") is not None:
            try:
                return webbrowser.get(using=get_user_preference("browser"))
            except webbrowser.Error:
                warnings.warn("Could not find the user preferred browser.")

        for browser in ["chrome", "chromium-browser"]:
            try:
                return webbrowser.get(using=browser)
            except webbrowser.Error:
                pass

        # Return default browser if none of the
        # preferred browsers are installed:
        return webbrowser.get() 

def __init__(self, cmd, args, retcode, stderr):
		'''Constructor

		@param cmd: the application command as string
		@param args: tuple of arguments given to the command
		@param retcode: the return code of the command (non-zero!)
		@param stderr: the error output of the command
		'''
		self.msg = _('Failed to run application: %s') % cmd
			# T: Error message when external application failed, %s is the command
		self.description = \
			_('%(cmd)s\nreturned non-zero exit status %(code)i') \
			% {'cmd': cmd + ' "' + '" "'.join(args) + '"', 'code': retcode}
			# T: Error message when external application failed, %(cmd)s is the command, %(code)i the exit code

		if stderr:
			self.description += '\n\n' + stderr 

def start_browser(self, url, name=None):
        browser = None

        if name is not None and name.lower() == 'none':
            log.info('Will not start any browser since --browser=none')
            return

        try:
            browser = webbrowser.get(name)
        except webbrowser.Error:
            old     = name or 'default'
            msg     = 'Could not find browser: %s.  Will use: %s.'
            browser = webbrowser.get()
            log.warn(msg, name, self.getBrowserName(browser))

        if type(browser) is webbrowser.GenericBrowser:
            msg = 'Will not start text-based browser: %s.'
            log.info(msg % self.getBrowserName(browser))
        elif browser is not None:
            log.info('Starting browser: %s' % self.getBrowserName(browser))
            browser.open_new(url) 

def _run_integration_server():
    """Runs integration server for interactive debugging."""

    logging.basicConfig(level=logging.INFO)

    logger = logging.getLogger("run_integration_server")

    loop = asyncio.get_event_loop()

    servers = IntegrationServers(False, True)
    logger.info("Starting integration servers...")
    loop.run_until_complete(servers.start_servers())

    try:
        webbrowser.open(servers.origin_server_url)
    except webbrowser.Error:
        pass

    try:
        loop.run_forever()
    except KeyboardInterrupt:
        pass
    finally:
        logger.info("Stopping integration servers...")
        loop.run_until_complete(servers.stop_servers()) 

def open_webbrowser(address):
    print("Your browser has been opened to visit")
    try:
        webbrowser.open(url=address, new=1)
    except webbrowser.Error as e:
        print("Unable to open the web browser: {}".format(e))
        sys.exit() 

def _open_auth_url(self, state=None):
        auth_url = self.get_authorize_url(state)
        try:
            webbrowser.open(auth_url)
            logger.info("Opened %s in your browser", auth_url)
        except webbrowser.Error:
            logger.error("Please navigate here: %s", auth_url) 

def _open_auth_url(self):
        auth_url = self.get_authorize_url()
        try:
            webbrowser.open(auth_url)
            logger.info("Opened %s in your browser", auth_url)
        except webbrowser.Error:
            logger.error("Please navigate here: %s", auth_url) 

def __init__(self):
		import webbrowser
		self.controller = None
		try:
			self.controller = webbrowser.get()
		except webbrowser.Error:
			pass # webbrowser throws an error when no browser is found 

def pytest_unconfigure(config):
    htmlcov_path = os.path.join('htmlcov', 'index.html')
    if (hasattr(config.option, 'cov_report') and
            'html' in config.option.cov_report and
            os.path.isfile(htmlcov_path)):
        try:
            webbrowser.open_new_tab(htmlcov_path)
        except webbrowser.Error:
            pass 

def autodocs():
    "create Sphinx docs locally, and start a watchdog"
    build_dir = path('docs/_build')
    index_html = build_dir / 'html/index.html'
    if build_dir.exists():
        build_dir.rmtree()

    with pushd("docs"):
        print "\n*** Generating API doc ***\n"
        sh("sphinx-apidoc -o apidoc -f -T ../src/pyrocore")
        sh("sphinx-apidoc -o apidoc -f -T $(dirname $(python -c 'import tempita; print(tempita.__file__)'))")
        print "\n*** Generating HTML doc ***\n"
        sh('command . ../bin/activate && '
           'nohup %s/Makefile SPHINXBUILD="sphinx-autobuild -p %d'
           ' -i \'.*\' -i \'*.log\' -i \'*.png\' -i \'*.txt\'" html >autobuild.log 2>&1 &'
           % (os.getcwd(), SPHINX_AUTOBUILD_PORT))

    for i in range(25):
        time.sleep(2.5)
        pid = watchdog_pid()
        if pid:
            sh("touch docs/index.rst")
            sh('ps {}'.format(pid))
            url = 'http://localhost:{port:d}/'.format(port=SPHINX_AUTOBUILD_PORT)
            try:
                import webbrowser
                webbrowser.open_new_tab(url)
            except webbrowser.Error:
                print("\n*** Open '{}' in your browser...".format(url))
            break 

def run(self, force_console=False):
        """Run the flow using a local server if possible, otherwise the
        console."""
        # TODO(b/141721828): make auto-detection smarter, especially for macOS.
        if not force_console and os.getenv("DISPLAY"):
            try:
                return self.run_local_server(port=0)
            except webbrowser.Error:
                sys.stderr.write(
                    "Falling back to console authentication flow...\n"
                )
        return self.run_console() 

def run(self):
        try:
            webbrowser.open(self.server_url)
        except webbrowser.Error:
            raise SystemExit('ERROR! Unable to open browser. '
                             'Please manually launch a browser and '
                             'navitage to this url: "%s".' % self.server_url) 

def open_link(url, name_of_link):
  """Open the given URL in the user's default webbrowser."""
  try:
    # If possible, open in a new tab, and raise the window to the front
    webbrowser.open(url, new=2, autoraise=True)
    return True
  except webbrowser.Error:
    sys.stderr.write("\t" + name_of_link + " failed to open.\n")
    return False 

def open_url(url: str):
    """Filter ugly terminal output when using webbrowser.

    When using webbrowser.open the follow error is shown:
    [20451:20471:0313/132752.481635:ERROR:browser_process_sub_thread.cc(209)]
    Waited 3 ms for network service.
    In attempts to improve UX when using the CLI, we are surpressing that
    error with the following utility. For more information refer to:
    http://man7.org/linux/man-pages/man2/dup.2.html
    """

    # Save previous standard file descriptors
    prev_stderr_fd = os.dup(2)
    prev_stdout_fd = os.dup(1)
    with open(os.devnull, 'wb') as f:
        # redirect stderr and stdout to os.devnull
        os.dup2(f.fileno(), 2)
        os.dup2(f.fileno(), 1)
        try:
            webbrowser.open(url)
        except webbrowser.Error:
            # We are not able to do anything if any internal errors happen
            # with webbrowser.open()
            pass
        finally:
            # restore stdout and stderr
            os.dup2(prev_stdout_fd, 1)
            os.dup2(prev_stderr_fd, 2) 

def _browse_doc(self, url):
        self.log.debug('_browse_doc: %s', url)
        try:
            if webbrowser.open(url):
                self.log.info('opened %s', url)
        except webbrowser.Error:
            self.log.exception('_browse_doc: webbrowser error')
            self.editor.raw_message(feedback["manual_doc"].format(url)) 

def handle_debug_vm_error(self, call_id, payload):
        self.editor.raw_message('Error. Check ensime-vim log for details.') 

def open_url_in_browser(url):
    try:
        logging.info("Trying to open %s with webbrowser" % url)
        webbrowser.open(url)
    except webbrowser.Error:
        logging.exception("Failed to open web browser") 

def set_user_preferences(
    theme: Optional[str] = None, browser: Optional[str] = None
) -> None:

    preferences = (
        json.loads(USER_SETTINGS_FILE.read_text())
        if USER_SETTINGS_FILE.is_file()
        else {}
    )

    new_preferences = {}

    if theme is not None:
        if theme not in installed_themes:
            raise ValueError(
                f"Theme {theme} is not one of the installed themes ({', '.join(installed_themes)})"
            )
        new_preferences["theme"] = theme

    if browser is not None:
        try:
            webbrowser.get(using=browser)
        except webbrowser.Error:
            raise ValueError(
                f"Could not find an installed browser with the name {browser}."
            )

        new_preferences["browser"] = browser

    if new_preferences:
        preferences.update(new_preferences)
        os.makedirs(USER_SETTINGS_FILE.parent, exist_ok=True)
        USER_SETTINGS_FILE.write_text(json.dumps(preferences)) 

def has_browser():
    try:
        webbrowser.get()
        return True
    except webbrowser.Error:
        return False 

def __init__(self, url, size=None, chromeArgs=[]):
        self.__instance = None

        if sys.platform[:3] == "win":
            exe = find_chrome_win()
        elif sys.platform == "darwin":
            exe = find_chrome_mac()
        else:
            for i in ["chromium-browser", "chromium", "google-chrome", "chrome"]:
                try:
                    exe = webbrowser.get(i).name
                    break
                except webbrowser.Error:
                    exe = None

        if exe:
            args = [exe, "--app=" + url] + chromeArgs
            if size == FULLSCREEN:
                args.append("--start-fullscreen")
            if tempfile.gettempdir():
                args.append(
                    "--user-data-dir=%s"
                    % os.path.join(tempfile.gettempdir(), ".wuyapp")
                )
            # self.__instance = subprocess.Popen( args, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL ) # make troubles on windows (freezd with noconsole don't start)
            self.__instance = subprocess.Popen(args)
        else:
            raise Exception("no browser") 

def play(self):

        # Display chat in a fresh browser window as a popup
        if Options.chat.enable:
            chat_url = f'http://www.twitch.tv/{self.channel_name}/chat?popout='
            try:
                webbrowser.get('chromium').open_new(f'--app={chat_url}')
            except webbrowser.Error:
                webbrowser.open_new(chat_url)
            except TypeError:
                webbrowser.get('chromium').open_new(f'--app={chat_url}')  # WTF?

        # Insert the name of only started games into the database
        # This keeps the database from getting too cluttered
        display_name = self.channel_params['display_name']
        player = Options.video.player_final
        if player[:3] == 'mpv':
            player += f' --title={display_name}'
        quality = Options.quality_map[self.channel_params['quality']]

        # The following prints to the console
        # If ever there is going to be a curses version
        # it will need to be suppressed
        if twitchy_config.print_to_stdout:
            print(' ' + Colors.WHITE +
                  self.channel_params['display_name'] + Colors.ENDC +
                  ' | ' + Colors.WHITE +
                  self.channel_params['quality'].title() + Colors.ENDC)

        args_to_subprocess = (
            f"streamlink twitch.tv/{self.channel_name} {quality} --player '{player}'")
        hls_settings = ' --hls-segment-threads 3'
        args_to_subprocess = shlex.split(args_to_subprocess + hls_settings)

        # Get the time when the stream starts
        self.start_time = time.time()

        if twitchy_config.non_interactive_mode:
            self.player_process = subprocess.Popen(
                args_to_subprocess,
                preexec_fn=os.setpgrp,
                stdout=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL)
            exit(0)
        else:
            self.player_process = subprocess.Popen(
                args_to_subprocess,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
                preexec_fn=os.setpgrp) 

def postprocess(self, input):
        """Serve the build directory with a webserver."""
        dirname, filename = os.path.split(input)
        handlers = [
            (r"/(.+)", web.StaticFileHandler, {'path' : dirname}),
            (r"/", web.RedirectHandler, {"url": "/%s" % filename})
        ]
        
        if ('://' in self.reveal_prefix or self.reveal_prefix.startswith("//")):
            # reveal specifically from CDN, nothing to do
            pass
        elif os.path.isdir(os.path.join(dirname, self.reveal_prefix)):
            # reveal prefix exists
            self.log.info("Serving local %s", self.reveal_prefix)
        else:
            self.log.info("Redirecting %s requests to %s", self.reveal_prefix, self.reveal_cdn)
            handlers.insert(0, (r"/(%s)/(.*)" % self.reveal_prefix, ProxyHandler))
        
        app = web.Application(handlers,
                              cdn=self.reveal_cdn,
                              client=AsyncHTTPClient(),
                              )
        
        # hook up tornado logging to our logger
        log.app_log = self.log

        http_server = httpserver.HTTPServer(app)
        http_server.listen(self.port, address=self.ip)
        url = "http://%s:%i/%s" % (self.ip, self.port, filename)
        print("Serving your slides at %s" % url)
        print("Use Control-C to stop this server")
        if self.open_in_browser:
            try:
                browser = webbrowser.get(self.browser or None)
                b = lambda: browser.open(url, new=2)
                threading.Thread(target=b).start()
            except webbrowser.Error as e:
                self.log.warning('No web browser found: %s.' % e)
                browser = None

        try:
            ioloop.IOLoop.instance().start()
        except KeyboardInterrupt:
            print("\nInterrupted") 

def main():

    # Parse arguments
    parser = OpinelArgumentParser()
    parser.add_argument('debug')
    parser.add_argument('profile')
    parser.add_argument('user-name', help = 'Your username (automatically fetched using iam:GetUser if not provided).')

    args = parser.parse_args()

    # Configure the debug level
    configPrintException(args.debug)

    # Check version of opinel
    if not check_requirements(os.path.realpath(__file__)):
        return 42

    # Arguments
    profile_name = args.profile[0]
    user_name = args.user_name[0]

    # Search for AWS credentials
    credentials = read_creds(profile_name)
    if not credentials['AccessKeyId']:
        return 42

    # Connect to IAM
    iam_client = connect_service('iam', credentials)
    if not iam_client:
        printError('Error: failed to create IAM API client.')
        return 42

    # Set the user name
    if not user_name:
        try:
            printInfo('Searching for username...')
            user_name = iam_client.get_user()['User']['UserName']
            if not user_name:
                printInfo('Error: could not find user name to enable MFA for.')
                return 42
        except Exception as e:
            configPrintException(e)

    # Create and activate the MFA device
    credentials['SerialNumber'] = enable_mfa(iam_client, user_name)

    # Update the credentials file
    write_creds_to_aws_credentials_file(profile_name, credentials)
    sample_command = 'awsrecipes_init_sts_session.py %s' % (('--profile %s' % profile_name) if profile_name != 'default' else '')
    printInfo('Your credentials file has been updated.\n' \
              'You may now initiate STS sessions to access the AWS APIs with the following command:\n' \
              '\n    %s\n' % sample_command) 

def display_qr_code(png, seed):
    """
    Display MFA QR code
    :param png:
    :param seed:
    :return:
    """
    # This NamedTemporaryFile is deleted as soon as it is closed, so
    # return it to caller, who must close it (or program termination
    # could cause it to be cleaned up, that's fine too).
    # If we don't keep the file around until after the user has synced
    # his MFA, the file will possibly be already deleted by the time
    # the operating system gets around to execing the browser, if
    # we're using a browser.
    qrcode_file = tempfile.NamedTemporaryFile(suffix='.png', delete=True, mode='wt')
    qrcode_file.write(png)
    qrcode_file.flush()
    if _fabulous_available:
        fabulous.utils.term.bgcolor = 'white'
        with open(qrcode_file.name, 'rb') as png_file:
            print(fabulous.image.Image(png_file, 100))
    else:
        graphical_browsers = [webbrowser.BackgroundBrowser,
                              webbrowser.Mozilla,
                              webbrowser.Galeon,
                              webbrowser.Chrome,
                              webbrowser.Opera,
                              webbrowser.Konqueror]
        if sys.platform[:3] == 'win':
            graphical_browsers.append(webbrowser.WindowsDefault)
        elif sys.platform == 'darwin':
            graphical_browsers.append(webbrowser.MacOSXOSAScript)

        browser_type = None
        try:
            browser_type = type(webbrowser.get())
        except webbrowser.Error:
            pass

        if browser_type in graphical_browsers:
            printError("Unable to print qr code directly to your terminal, trying a web browser.")
            webbrowser.open('file://' + qrcode_file.name)
        else:
            printInfo("Unable to print qr code directly to your terminal, and no graphical web browser seems available.")
            printInfo("But, the qr code file is temporarily available as this file:")
            printInfo("\n    %s\n" % qrcode_file.name)
            printInfo("Alternately, if you feel like typing the seed manually into your MFA app:")
            # this is a base32-encoded binary string (for case
            # insensitivity) which is then dutifully base64-encoded by
            # amazon before putting it on the wire.  so the actual
            # secret is b32decode(b64decode(seed)), and what users
            # will need to type in to their app is just
            # b64decode(seed).  print that out so users can (if
            # desperate) type in their MFA app.
            printInfo("\n    %s\n" % base64.b64decode(seed))
    return qrcode_file 

def start(self):
        """ Start the IPython Notebook server app, after initialization
        
        This method takes no arguments so all configuration and initialization
        must be done prior to calling this method."""
        ip = self.ip if self.ip else '[all ip addresses on your system]'
        proto = 'https' if self.certfile else 'http'
        info = self.log.info
        self._url = "%s://%s:%i%s" % (proto, ip, self.port,
                                      self.base_project_url)
        for line in self.notebook_info().split("\n"):
            info(line)
        info("Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).")

        if self.open_browser or self.file_to_run:
            ip = self.ip or LOCALHOST
            try:
                browser = webbrowser.get(self.browser or None)
            except webbrowser.Error as e:
                self.log.warn('No web browser found: %s.' % e)
                browser = None

            if self.file_to_run:
                name, _ = os.path.splitext(os.path.basename(self.file_to_run))
                url = self.notebook_manager.rev_mapping.get(name, '')
            else:
                url = ''
            if browser:
                b = lambda : browser.open("%s://%s:%i%s%s" % (proto, ip,
                    self.port, self.base_project_url, url), new=2)
                threading.Thread(target=b).start()
        try:
            ioloop.IOLoop.instance().start()
        except KeyboardInterrupt:
            info("Interrupted...")
        finally:
            self.cleanup_kernels()
    

#-----------------------------------------------------------------------------
# Main entry point
#----------------------------------------------------------------------------- 

def show_image_slideshow(filenames, image_size, filename=None, title=None,
                         section_ids=None, delay=100, delay_delta=20,
                         loop=True, slideshow_id=None,
                         magnification=1, mag_control=True, open_browser=True):
    """Write the slideshow into a HTML file, open it in the browser and
    return a file object pointing to the file. If the filename is not given,
    a temporary file is used, and will be deleted when the returned file object
    is closed or destroyed.

    filenames -- Sequence of the image filenames.
    image_size -- Tuple (x,y) with the original image size, or enter
        a different size to force scaling.
    filename -- Filename for the HTML file to be created. If None
            a temporary file is created.
    title -- Optional slideshow title (for default None not title is shown).
    section_ids -- List with the section id for each slide index. The id
            can be a string or a number. Default value None disables the
            section feature.
    open_browser -- If True (default value) then the slideshow file is
        automatically opened in a webbrowser. One can also use string value
        with the browser name (for webbrowser.get) to request a specific
        browser.

    For additional keyword arguments see the ImageHTMLSlideShow class.
    """
    if filename is None:
        html_file = tempfile.NamedTemporaryFile(suffix=".html", prefix="MDP_")
    else:
        html_file = open(filename, 'w')
    html_file.write('<html>\n<head>\n<title>%s</title>\n' % title)
    html_file.write('<style type="text/css" media="screen">')
    html_file.write(basic_css() + image_slideshow_css())
    html_file.write('</style>\n</head>\n<body>\n')
    kwargs = vars()
    del kwargs['filename']
    del kwargs['open_browser']
    del kwargs['html_file']
    html_file.write(image_slideshow(**kwargs))
    html_file.write('</body>\n</html>')
    html_file.flush()

    if open_browser:
        if isinstance(open_browser, str):
            try:
                custom_browser = webbrowser.get(open_browser)
                custom_browser.open(os.path.abspath(filename))
            except webbrowser.Error:
                err = ("Could not open browser '%s', using default." %
                       open_browser)
                warnings.warn(err)
                webbrowser.open(os.path.abspath(filename))
        else:
            webbrowser.open(os.path.abspath(filename))
    return html_file