<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def artist( 		self, artist_id, *, include_albums=True, num_related_artists=5, num_top_tracks=5 	):
 		"""Get information about an artist. 		Parameters: 			artist_id (str):
 An artist ID. Artist IDs start with an 'A'. 			include_albums (bool, Optional):
 Include albums by the artist in returned dict. 				Default: ``True``. 			num_related_artists (int, Optional):
 Include up to given number of related artists in returned dict. 				Default: ``5``. 			num_top_tracks (int, Optional):
 Include up to given number of top tracks in returned dict. 				Default: ``5``. 		Returns: 			dict: Artist information. 		"""


		response = self._call(
			mc_calls.FetchArtist,
			artist_id,
			include_albums=include_albums,
			num_related_artists=num_related_artists,
			num_top_tracks=num_top_tracks
		)
		artist_info = response.body

		return artist_info