Question

this is my code on python 3.2.3 IDLE:

numbers = []
numbers = input("(Enter a empty string to quit) Enter a number: ")
while numbers != "":
    numbers = input("(Enter a empty string to quit) Enter a number; ")
numbers.append(n)
print ("The list is", numbers)

problem now is, i can’t append the list.
if i make numbers = int(input( then it works for appending the list but won’t let me quit out of entering the numbers.
if i make numbers = input
like i have right now, it won’t let me append the list

how can i get these numbers to append to a list?

Answer 1

There are two problems:

1. you’re assigning the input to numbers instead of n;
2. the append() is in the wrong place.

Try the following:

numbers = []
n = input("(Enter a empty string to quit) Enter a number: ")
while n != "":
    numbers.append(n)
    n = input("(Enter a empty string to quit) Enter a number; ")
print ("The list is", numbers)

If you want to store integers instead of string, change the append() line to:

    numbers.append(int(n))

Stylistically, if the first prompt is the same as the prompt for all subsequent inputs, I’d restructure the code as follows:

numbers = []
while True:
    n = input("(Enter a empty string to quit) Enter a number: ")
    if n == "": break
    numbers.append(n) # or int(n)
print ("The list is", numbers)