python怎么利用chinese_calendar获取上一个工作日日期

import datetime
from chinese_calendar import is_workday
def get_pervious_work_day(day: datetime):
    """获取上一个工作日"""
    day = day - datetime.timedelta(days=1)
    if is_workday(day):
        return day
    return get_pervious_work_day(day)

today = datetime.date.today().replace(day=20)
date = get_pervious_work_day(today)
print(date)

today = datetime.date.today().replace(day=28).replace(month=1)
date = get_pervious_work_day(today)
print(date)

today = datetime.date.today().replace(day=4).replace(month=5)
date = get_pervious_work_day(today)
print(date)

today = datetime.date.today().replace(day=7).replace(month=10)
date = get_pervious_work_day(today)
print(date)

import chinese_calendar
import datetime
def after_work_day():
    year = 2021
    month = 9
    day = 10
    # after_work_days是设置多少个工作日
    after_work_days = 30
    next_year = year + 1
    range_time = datetime.datetime(next_year, month, day)
    # 如果一年后的时间超过了模块规定的最长时间，那么直接取最新版的最大时间 截止目前(2022.11.30)最新版到2022年末，需要等国家出台了明年的放假安排之后可能才会更新
    if range_time >= datetime.datetime(2022, 12, 31):
        range_time = datetime.datetime(2022, 12, 31)
    work_days = chinese_calendar.get_workdays(datetime.datetime(year, month, day), range_time)
    count = 0
    for work_day in work_days:
        count += 1
        if count > after_work_days:
            print(work_day)
            break
if __name__ == '__main__':
    after_work_day()