def count_evens(nums):

  count = 0 

  for number in nums: 

    if number%2 == 0:

      count += 1

  return count

def count_evens(nums):

  count = 0 

  for number in nums: 

    if number%2 == 0:

      count += 1

  return count

def centered_average(nums):

  nums.sort()

  return sum(nums[1:-1]) / (len(nums) - 2)

def sum13(nums):

  co=0

  if len(nums)<=0:

    return co

  for a in range(1,len(nums)):

    if nums[a]==13:

      continue

    elif nums[a-1]==13:

      continue

    else:

      co=co+nums[a]      

  if nums[0]!=13:

    co+=nums[0]

  return co

def sum67(nums):

  count = 0

  run = False

  for n in nums:

    if n == 6:

      run = True

      continue

    if n == 7 and run:

      run = False

      continue

    if not run:  

      count += n

  return count

def has22(nums):

  for i,v in enumerate(nums[:-1]):

    if v == 2 and nums[i+1] == 2:

      return True

  return False