Prime number

'''Still working on the code'''

import math
def get_integer(prompt):
    '''Prompts the user to enter an integer, and ensures the user enters an
    integer'''
    while True:
        try:
            num = int(input(prompt))
        except ValueError:
            print("That is not a number -- please try again without decimal"
                  "points")
            continue
        return num
my_numbers = []
Prime_checker = get_integer("Please enter an integer:") # user inputs the number
checkers = []
for x in range(2,int(math.sqrt(Prime_checker))+1):
    checkers.append(x)
print(checkers)
while len(checkers) != 0:
    for num in checkers:
        if Prime_checker % num != 0:
            checkers.remove(num)
            is_prime = True
    if is_prime is True:
        my_numbers.append(Prime_checker)
    else:
        print("that is not a prime number")
print(my_numbers)