code: def findvalue(array, value, compare = lambda x, y: x == y):
      "A function that uses the compare function to return a value from the list."
      try:
          return next(x for x in array if compare(x, value))
      except StopIteration:
          raise ValueError('%r not in array'%valuef findvalue(array, value, compare = lambda x, y: x == y):
      "A function that uses the compare function to return a value from the list."
      try:
          return next(x for x in array if compare(x, value))
      except StopIteration:
          raise ValueError('%r not in array'%value)
docs: A function that uses the compare function to return a value from the list.