input: def count_even_odd_digits(n):
      """Accepts an integer and returns a tuple representing the count of even and odd digits.
  
       Example:
          count_even_odd_digits(-34) ==> (1, 1)
          count_even_odd_digits(567) ==> (0, 3)
      """
output:     
      even_count = 0
      odd_count = 0
      n = abs(n)
      while n > 0:
          digit = n % 10
          if digit % 2 == 0:
              even_count += 1
          else:
              odd_count += 1
          n //= 10
      return even_count, odd_count
  