计算日期之间的月数

 date1 = datetime.strptime("2022-01-01", "%Y-%m-%d")

 date2 = datetime.strptime("2022-06-30", "%Y-%m-%d")

 month_diff = (date2.year - date1.year) * 12 + (date2.month - date1.month)

 print(month_diff)

 ```

 var monthDiff = (date2.getFullYear() - date1.getFullYear()) * 12 + (date2.getMonth() - date1.getMonth());

 console.log(monthDiff);

 ```

 LocalDate date1 = LocalDate.parse("2022-01-01");

 LocalDate date2 = LocalDate.parse("2022-06-30");

 Period period = Period.between(date1, date2);

 int monthDiff = period.getYears() * 12 + period.getMonths();

 System.out.println(monthDiff);

 ```