input: Write a function to generate a Python script that takes any number of integer arguments and returns their sum. If no arguments are provided, it should return 0.
  assert sum_ints(3, 5, 7)==15
  assert sum_ints(-1, 0, 1)==0
  assert sum_ints(10, 20, 30, 40)==100
  assert sum_ints() == 0
output: def sum_ints(*args):
      return sum(args)