Write a program to generate and display the next date of a given date.

NextDate.py

def next_date(day,month,year):

    flag = False

    day = day + 1

    if year%4 == 0:
        
        if year % 100:
            if year%400 == 0:
                flag =  True
            else:
                flag = False
        else :
            flag = True
    else : 
        flag = False
    
    
    if month in [1,3,5,7,9,11]:        
        if day >31:
            day = 1
            month = month + 1

    elif month in [4,6,8,10,12]:
        if day >30:
            day = 1
            month = month + 1

    elif month == 2 :
        if flag == True :
            if day > 29:
                day = 1
                month = month + 1
        else :
            if day >28 :
                day = 1
                month = month + 1
    
    if month > 12:
        month = 1
        year = year + 1

    print(day,"-",month,"-",year)


next_date(31,11,2019)