def _get_id(self, player):
return player('<STR_LIT>').attr('<STR_LIT>')<EOL>
Parse the player ID.

Given a PyQuery object representing a single player on the team roster,
parse the player ID and return it as a string.

Parameters
----------
player : PyQuery object
    A PyQuery object representing the player information from the
    roster table.

Returns
-------
string
    Returns a string of the player ID.