Question

In Python use the function design recipe from Chapter 3 of Practical Programming to develop a function named first_last6. The function takes a list of integers. (Assume that the list will not be empty.) The function returns True if a 6 is the first element or the last element or if both the first and last element are 6. Otherwise, the function returns False.

Answer 1

The solution to the above question is given below with screenshot of output.

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I kept the logic simple and i have tested all outputs.

If there is anything else do let me know in comments.

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============ CODE TO COPY ===============================

def first_last6(num_list):
  """ Returns True if a 6 is the first element or
      the last element or
      if both the first and last element are 6.
      Otherwise, the function returns False. """
  if ( num_list[0] == 6 and num_list[-1] == 6 ) or num_list[0] == 6 or num_list[-1] == 6:
    return True

  return False

mylist1 = [6,2,3,4,5]
mylist2 = [1,2,3,4,5,6]
mylist3 = [1,2,3,4,5]
mylist4 = [6,2,3,4,6]

print(first_last6(mylist1))
print(first_last6(mylist2))
print(first_last6(mylist3))
print(first_last6(mylist4))

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output :