如何使用Python仅查找包含该月最后一天日期的文件？

import os
import datetime

now = datetime.datetime.now()
year = now.year
month = now.month

if month == 12:
    next_month = 1
    next_year = year + 1
else:
    next_month = month + 1
    next_year = year
next_month_first_day = datetime.datetime(next_year, next_month, 1)

this_month_last_day = next_month_first_day - datetime.timedelta(days=1)

target_folder = '/path/to/target/folder'
for filename in os.listdir(target_folder):
    file_path = os.path.join(target_folder, filename)
    if os.path.isfile(file_path):
        file_date = datetime.datetime.fromtimestamp(os.path.getmtime(file_path))
        if file_date.day == this_month_last_day.day:
            print(file_path)