How to use the pytube.extract.get_ytplayer_config function in pytube

The initialization process takes advantage of Python's
        "call-by-reference evaluation," which allows dictionary transforms to
        be applied in-place, instead of holding references to mutations at each
        interstitial step.

        :rtype: None

        """
        logger.info('init started')

        self.vid_info = {k: v for k, v in parse_qsl(self.vid_info)}
        if self.age_restricted:
            self.player_config_args = self.vid_info
        else:
            self.player_config_args = extract.get_ytplayer_config(
                self.watch_html,
            )['args']

            # Fix for KeyError: 'title' issue #434
            if 'title' not in self.player_config_args:
                i_start = (
                    self.watch_html
                    .lower()
                    .index('<title>') + len('&lt;title&gt;')
                )
                i_end = self.watch_html.lower().index('</title>')
                title = self.watch_html[i_start:i_end].strip()
                index = title.lower().rfind(' - youtube')
                title = title[:index] if index &gt; 0 else title
                self.player_config_args['title'] = title

The initialization process takes advantage of Python's
		"call-by-reference evaluation," which allows dictionary transforms to
		be applied in-place, instead of holding references to mutations at each
		interstitial step.

		:rtype: None

		"""
		PLog('init YouTube started')

		self.vid_info = {k: v for k, v in parse_qsl(self.vid_info)}
		if self.age_restricted:
			self.player_config_args = self.vid_info
		else:
			self.player_config_args = extract.get_ytplayer_config(
				self.watch_html,
			)['args']

			# Fix for KeyError: 'title' issue #434
			if 'title' not in self.player_config_args:
				i_start = (
					self.watch_html
					.lower()
					.index('<title>') + len('&lt;title&gt;')
				)
				i_end = self.watch_html.lower().index('</title>')
				title = self.watch_html[i_start:i_end].strip()
				index = title.lower().rfind(' - youtube')
				title = title[:index] if index &gt; 0 else title
				self.player_config_args['title'] = title

The initialization process takes advantage of Python's
        "call-by-reference evaluation," which allows dictionary transforms to
        be applied in-place, instead of holding references to mutations at each
        interstitial step.

        :rtype: None

        """
        logger.info('init started')

        self.vid_info = {k: v for k, v in parse_qsl(self.vid_info)}
        if self.age_restricted:
            self.player_config_args = self.vid_info
        else:
            self.player_config_args = extract.get_ytplayer_config(
                self.watch_html,
            )['args']

        self.vid_descr = extract.get_vid_descr(self.watch_html)
        # https://github.com/nficano/pytube/issues/165
        stream_maps = ['url_encoded_fmt_stream_map']
        if 'adaptive_fmts' in self.player_config_args:
            stream_maps.append('adaptive_fmts')

        # unscramble the progressive and adaptive stream manifests.
        for fmt in stream_maps:
            if not self.age_restricted and fmt in self.vid_info:
                mixins.apply_descrambler(self.vid_info, fmt)
            mixins.apply_descrambler(self.player_config_args, fmt)

            try: