input: Write a function to determine if a given number is even or odd. The function should return "Even" if the number is even, and "Odd" if the number is odd. If the input number is 0, it should also return "Even".
  def even_or_odd(num):
      if num % 2 == 0:
          return "Even"
      else:
          return "Odd"
  assert even_or_odd(4) == "Even"
  assert even_or_odd(7) == "Odd"
  assert even_or_odd(0) == "Even"
  assert even_or_odd(-3) == "Odd"
  assert even_or_odd(-6) == "Even"
output: def even_or_odd(num):
      if num % 2 == 0:
          return "Even"
      else:
          return "Odd"