@property<EOL><INDENT>def team_abbreviation(self):<DEDENT>
<EOL>if self._season[self._index].lower() == '<STR_LIT>':<EOL><INDENT>return None<EOL><DEDENT>return self._team_abbreviation[self._index]<EOL>
Returns a ``string`` of the team's abbreviation, such as 'DET' for the
Detroit Red Wings.