hide_phone_number.py

phone_no = input("Enter phone number : ")
phone_list = phone_no.split("-")
len_phone_part = [3,3,4]
result = 1
if len(phone_list) == 3 :
    for y,x in zip (len_phone_part  , phone_list) :
        if len(x) != y :
            result = 0
            break 
else :
    result = 0
    
if result == 1 :
    phone_list[2] = "XXXX"
    phone_list[1] = phone_list[1][:2] + "XX"
    print ("-".join(phone_list))
else :
    print ("Invalid phone number :")