def _parse_birth_date(self, player_info):
date = player_info('<STR_LIT>').attr('<STR_LIT>')<EOL>setattr(self, '<STR_LIT>', date)<EOL>
Parse the player's birth date.

Pull the player's birth date from the player information and set the
'_birth_date' attribute with the value prior to returning.

Parameters
----------
player_info : PyQuery object
    A PyQuery object containing the HTML from the player's stats page.