How to use the pylast._Request.execute function in pylast

additional_args = ("timestamp", "album", "album_artist", "context", "stream_id", "track_number", "mbid", "duration")
            args_map_to = {"album_artist": "albumArtist", "track_number": "trackNumber", "stream_id": "streamID"}  # so friggin lazy
            
            for arg in additional_args:
                
                if arg in tracks_to_scrobble[i] and tracks_to_scrobble[i][arg]:
                    if arg in args_map_to:
                        maps_to = args_map_to[arg]
                    else:
                        maps_to = arg
                    
                    params["%s[%d]" %(maps_to, i)] = tracks_to_scrobble[i][arg]
        
        
        _Request(self, "track.scrobble", params).execute()
        
        if remaining_tracks:
            self.scrobble_many(remaining_tracks)

def get_track_by_mbid(self, mbid):
        """Looks up a track by its MusicBrainz ID"""
        
        params = {"mbid": mbid}
        
        doc = _Request(self, "track.getInfo", params).execute(True)
        
        return Track(_extract(doc, "name", 1), _extract(doc, "name"), self)

def get_top_artists(self, limit=None):
        """Returns a sequence of the most played artists."""

        doc = _Request(self, "chart.getTopArtists").execute(True)
        seq = []
        for node in doc.getElementsByTagName("artist"):
            title = _extract(node, "name")
            artist = Artist(title, self)
            seq.append(artist)

        if limit:
            seq = seq[:limit]

        return seq

def _request(self, method_name, cacheable = False, params = None):
        if not params:
            params = self._get_params()

        return _Request(self.network, method_name, params).execute(cacheable)

additional_args = ("timestamp", "album", "album_artist", "context", "stream_id", "track_number", "mbid", "duration")
            args_map_to = {"album_artist": "albumArtist", "track_number": "trackNumber", "stream_id": "streamID"}  # so friggin lazy

            for arg in additional_args:

                if arg in tracks_to_scrobble[i] and tracks_to_scrobble[i][arg]:
                    if arg in args_map_to:
                        maps_to = args_map_to[arg]
                    else:
                        maps_to = arg

                    params["%s[%d]" %(maps_to, i)] = tracks_to_scrobble[i][arg]


        _Request(self, "track.scrobble", params).execute()

        if remaining_tracks:
            self.scrobble_many(remaining_tracks)

duration (Optional) : The length of the track in seconds.
                track_number (Optional) : The track number of the track on the album.
                mbid (Optional) : The MusicBrainz Track ID.
                context (Optional) : Sub-client version (not public, only enabled for certain API keys)
        """

        params = {"track": title, "artist": artist}

        if album: params["album"] = album
        if album_artist: params["albumArtist"] = album_artist
        if context: params["context"] = context
        if track_number: params["trackNumber"] = track_number
        if mbid: params["mbid"] = mbid
        if duration: params["duration"] = duration

        _Request(self, "track.updateNowPlaying", params).execute()

def get_album_by_mbid(self, mbid):
        """Looks up an album by its MusicBrainz ID"""
        
        params = {"mbid": mbid}
        
        doc = _Request(self, "album.getInfo", params).execute(True)
        
        return Album(_extract(doc, "artist"), _extract(doc, "name"), self)

def get_album_by_mbid(self, mbid):
        """Looks up an album by its MusicBrainz ID"""

        params = {"mbid": mbid}

        doc = _Request(self, "album.getInfo", params).execute(True)

        return Album(_extract(doc, "artist"), _extract(doc, "name"), self)

def get_artist_by_mbid(self, mbid):
        """Loooks up an artist by its MusicBrainz ID"""
        
        params = {"mbid": mbid}
        
        doc = _Request(self, "artist.getInfo", params).execute(True)
        
        return Artist(_extract(doc, "name"), self)