Get all batting stats for a set season. If no argument is supplied, gives
    stats for current season to date.

def batting_stats_bref(season=None):
    """
    Get all batting stats for a set season. If no argument is supplied, gives
    stats for current season to date.
    """
    if season is None:
        season = datetime.datetime.today().strftime("%Y")
    season = str(season)
    start_dt = season + '-03-01' #opening day is always late march or early april
    end_dt = season + '-11-01' #season is definitely over by November
    return(batting_stats_range(start_dt, end_dt))