def score_for_in(self, leaderboard_name, member):
score = self.redis_connection.zscore(leaderboard_name, member)<EOL>if score is not None:<EOL><INDENT>score = float(score)<EOL><DEDENT>return score<EOL>
Retrieve the score for a member in the named leaderboard.

@param leaderboard_name Name of the leaderboard.
@param member [String] Member name.
@return the score for a member in the leaderboard or +None+ if the member is not in the leaderboard.