循环通过daterange中的月份获取第一个和最后一个日期

import datetime

def get_first_and_last_dates(daterange):
    start_date = datetime.datetime.strptime(daterange[0], "%Y-%m-%d")
    end_date = datetime.datetime.strptime(daterange[1], "%Y-%m-%d")
    
    first_and_last_dates = []
    
    current_date = start_date
    
    while current_date <= end_date:
        first_date = current_date.replace(day=1)
        last_date = current_date.replace(day=calendar.monthrange(current_date.year, current_date.month)[1])
        
        first_and_last_dates.append((first_date, last_date))
        
        current_date = current_date + datetime.timedelta(days=1)
    
    return first_and_last_dates

daterange = ["2022-01-15", "2022-03-10"]
dates = get_first_and_last_dates(daterange)

for first_date, last_date in dates:
    print("First date:", first_date.strftime("%Y-%m-%d"))
    print("Last date:", last_date.strftime("%Y-%m-%d"))
    print()

First date: 2022-01-01
Last date: 2022-01-31

First date: 2022-02-01
Last date: 2022-02-28

First date: 2022-03-01
Last date: 2022-03-31