如何从列表中过滤所有季度时间序列？

import datetime

def filter_quarterly_time_series(time_series_list):
    quarterly_time_series = []
    
    for time_series in time_series_list:
        # 解析时间序列
        try:
            date_obj = datetime.datetime.strptime(time_series, "%Y-%m-%d")
        except ValueError:
            continue
        
        # 获取季度信息
        quarter = (date_obj.month - 1) // 3 + 1
        
        # 筛选符合条件的时间序列
        if quarter in [1, 2, 3, 4]:
            quarterly_time_series.append(time_series)
    
    return quarterly_time_series