必应出来的一段参考代码（ref：How to Use Hypothesis and Pytest for Robust Property-Based Testing in Python | Pytest With Eric）：

def find_largest_smallest_item(input_array: list) -> tuple:  """  Function to find the largest and smallest items in an array  :param input_array: Input array  :return: Tuple of largest and smallest items  """  if len(input_array) == 0:  raise ValueError  # Set the initial values of largest and smallest to the first item in the array  largest = input_array[0]  smallest = input_array[0]  # Iterate through the array  for i in range(1, len(input_array)):  # If the current item is larger than the current value of largest, update largest  if input_array[i] > largest:  largest = input_array[i]  # If the current item is smaller than the current value of smallest, update smallest  if input_array[i] < smallest:  smallest = input_array[i]  return largest, smallest 

简洁一点的：

def find_bigest_smallest_item(input_array: list) -> tuple:if not input_array:raise ValueErrorbig = small = input_array[0]for v in input_array[1:]:if v > big:big = velif v < small:small = vreturn big, small

如果数组元素很多，则需切片为生成器，以免占用过多内存

from itertools import islicedef find_bigest_smallest_item(input_array: list) -> tuple:if not input_array:raise ValueErrorbig = small = input_array[0]for v in islice(input_array, 1, len(input_array)):if v > big:big = velif v < small:small = vreturn big, small