def _parse_abbreviation(uri_link):
abbr = re.sub(r'<STR_LIT>', '<STR_LIT>', uri_link('<STR_LIT:a>').attr('<STR_LIT>'))<EOL>abbr = re.sub(r'<STR_LIT>', '<STR_LIT>', abbr)<EOL>abbr = re.sub(r'<STR_LIT>', '<STR_LIT>', abbr)<EOL>return abbr.upper()<EOL>
Returns a team's abbreviation.

A school or team's abbreviation is generally embedded in a URI link which
contains other relative link information. For example, the URI for the
New England Patriots for the 2017 season is "/teams/nwe/2017.htm". This
function strips all of the contents before and after "nwe" and converts it
to uppercase and returns "NWE".

Parameters
----------
uri_link : string
    A URI link which contains a team's abbreviation within other link
    contents.

Returns
-------
string
    The shortened uppercase abbreviation for a given team.