input: Write a python function to determine if a number is even or odd.
  assert is_even_odd(7) == "Odd"
  assert is_even_odd(10) == "Even"
  assert is_even_odd(0) == "Even"
  assert is_even_odd(-3) == "Odd"
output: def is_even_odd(number):
      if number % 2 == 0:
          return "Even"
      else:
          return "Odd"