def first_last6(nums):

  if nums[0] == 6 or nums[-1] == 6:

    return True 

  else: 

    return False 

def same_first_last(nums):

  if len(nums) >= 1 and nums[0]==nums[-1]:

    return True 

  else:

    return False

def make_pi():

  return [3,1,4]

def common_end(a, b):

  if a[0] == b[0] or a[-1] == b[-1]:

    return True 

  else:

    return False

def sum3(nums):

  return sum(nums)

def rotate_left3(nums):

  return [nums[1],nums[2],nums[0]]

def reverse3(nums):

  return nums[::-1]

def max_end3(nums):

  return [max(nums[0],nums[-1])]*3

def sum2(nums):

  if len(nums) < 2:

    return sum(nums)a

  else:

    return nums[0]+nums[1]

def middle_way(a, b):

  len_a,len_b = len(a),len(b)

  return [a[len_a/2],b[len_b/2]]

def make_ends(nums):

  return [nums[0],nums[-1]]

def has23(nums):

  return 2 in nums or 3 in nums