def Day_num(birth_year,birth_month,birth_day): day = 0 for month in range(birth_month,12): if month==3 or month==5 or month==7 or month==8 or month==10 or month==12: day = day+31 elif month==2: day = day+28 else: day = day+30
if birth_year%4==0: day = day+1-birth_day else: day = day-birth_day
for year in range(birth_year+1,2020): if(year%4==0): day = day+366 else: day = day+356