Weekly challenge

print("\t\tWEEKLY CODING CHALLENGE")
print("\n")
print("This program is written to return a number list whose length is up to 15 or more without repetition of its items\nHAPPY CODING!")
print("\n")


#FUNCTION PROGRAM
def duplicate(number):
    answer=[]
    if len(number)<15:
        print("The length of your number choices is not up to 15. Please, try again!")
    else:
        for n in number:
            if n not in answer:
                answer.append(n)
        print("Your list of number choices are:",number)
        print("\n")
        print("The list of those numbers without repetition is:", answer)
        print("\n")
        print("The length of the new list without repetition is:", len(answer))


#MAIN PROGRAM
number_list=[]
num_list=[]
print("You are about to be prompted for your number choices. Remember, you must enter 'Done' when you are okay with your choices.")
print("\n")
while True:
    #using capitalize() to format the input wont allow us to run into trouble in case the user enter "Done" in diferrent cases.
    num=input("Please, enter those numbers one after the other: ").capitalize()
    if num=="Done":
        break
    else:
        num_list.append(num)

#The line below will generate an integer list
number_list=[int(i) for i in num_list]

#The line below will also sort the items.in ascending order
number_list.sort()

#Lets call our function to action!
duplicate(number_list)