def _parse_value(self, stats, field):
scheme = PLAYER_SCHEME[field]<EOL>items = [i.text() for i in stats(scheme).items()]<EOL>if len(items) == <NUM_LIT:0>:<EOL><INDENT>return None<EOL><DEDENT>return items<EOL>
Pull the specified value from the HTML contents.

Given a field, find the corresponding HTML tag for that field and parse
its value before returning the value as a string.

Parameters
----------
stats : PyQuery object
    A PyQuery object containing all stats in HTML format for a
    particular player.
field : string
    A string of the field to parse from the HTML.

Returns
-------
list
    A list of all values that match the requested field. If no value
    could be found, returns None.