生成一系列月份和年份

import datetime

def generate_dates(start_year, end_year):
    dates = []
    for year in range(start_year, end_year+1):
        for month in range(1, 13):
            date = datetime.datetime(year, month, 1)
            dates.append(date.strftime("%B, %Y"))
    return dates

start_year = 2020
end_year = 2022
dates = generate_dates(start_year, end_year)
print(dates)

['January, 2020', 'February, 2020', 'March, 2020', 'April, 2020', 'May, 2020', 'June, 2020', 'July, 2020', 'August, 2020', 'September, 2020', 'October, 2020', 'November, 2020', 'December, 2020', 'January, 2021', 'February, 2021', 'March, 2021', 'April, 2021', 'May, 2021', 'June, 2021', 'July, 2021', 'August, 2021', 'September, 2021', 'October, 2021', 'November, 2021', 'December, 2021', 'January, 2022', 'February, 2022', 'March, 2022']