Simple program for date validation and increment using python looping?

Description

To validate and increment the date using python3.

  Print help.

   Print list.

   Add the items in to list.

   Print the items in the list.

   Quit the program.

#get input from the user
date=input(“Enter the date: “)

#split the input
dd,mm,yy=date.split(‘/’)
dd=int(dd)
mm=int(mm)
yy=int(yy)

#define the conditions

if(mm==1 or mm==3 or mm==5 or mm==7 or mm==8 or mm==10 or mm==12):
max1=31
elif(mm==4 or mm==6 or mm==9 or mm==11):
max1=30
elif(yy%4==0 and yy%100!=0 or yy%400==0):
max1=29
else:
max1=28
if(mm12):
print(“Date is invalid.”)
elif(ddmax1):
print(“Date is invalid.”)
elif(dd==max1 and mm!=12):
dd=1
mm=mm+1
print(“The incremented date is: “,dd,mm,yy)
elif(dd==31 and mm==12):
dd=1
mm=1
yy=yy+1
print(“The incremented date is: “,dd,mm,yy)
else:
dd=dd+1
print(“The incremented date is: “,dd,mm,yy)