Enrique Benito Casado

import datetime

runtime_start = datetime.date(2021,1,1)
runtime_end = datetime.date(2022,3,1)
current_year = datetime.date.today().year


def calculate_differentmonths(runtime_start, runtime_end, current_year):
     if current_year == runtime_end.year:
         run_months = runtime_end.month - runtime_start.month 
     else:    
         years_month = (current_year - runtime_start.year) * 12
         run_months =  datetime.date.today().month + years_month

     return run_months

检查结果:

print(calculate_differentmonths(runtime_start, runtime_end, current_year)) 

结果12

print(calculate_differentmonths(datetime.date(2021,1,1), datetime.date(2021,6,1), current_year))

结果5