def _parse_abbreviation(self, abbr):
if '<STR_LIT>' not in str(abbr):<EOL><INDENT>return None<EOL><DEDENT>abbr = re.sub(r'<STR_LIT>', '<STR_LIT>', str(abbr))<EOL>abbr = re.sub(r'<STR_LIT>', '<STR_LIT>', abbr)<EOL>return abbr<EOL>
Parse a team's abbreviation.

Given the team's HTML name tag, parse their abbreviation.

Parameters
----------
abbr : string
    A string of a team's HTML name tag.

Returns
-------
string
    Returns a ``string`` of the team's abbreviation.