python 计算两个日期之间年数差月数差

在Python中，计算两个日期之间的年数差和月数差可以使用datetime模块来实现。可以通过计算两个日期的年份和月份的差值来得到结果。下面是一个示例代码：

import datetime

def get_date_diff(start_date, end_date):
    start_year = start_date.year
    start_month = start_date.month
    end_year = end_date.year
    end_month = end_date.month

    year_diff = end_year - start_year
    month_diff = end_month - start_month

    if month_diff < 0:
        year_diff -= 1
        month_diff += 12

    return year_diff, month_diff

# 示例使用
start_date = datetime.date(2020, 1, 15)
end_date = datetime.date(2021, 9, 30)
year_diff, month_diff = get_date_diff(start_date, end_date)

print("年数差:", year_diff)
print("月数差:", month_diff)