input:                         def get_max_min(lst):
                              """
                              Get the maximum and minimum values in a given list.
                              
                              Example:
                              >>> get_max_min([3, 1, 4, 1, 5, 9, 2, 6])
                              (1, 9)
                              >>> get_max_min([7, 7, 7, 7, 7])
                              (7, 7)
                              """
                              min_value = lst[0]
                              max_value = lst[0]
                              
                              for i in range(1, len(lst)):
                                  if lst[i] > max_value:
                                      max_value = lst[i]
                                  if lst[i] < min_value:
                                      min_value = lst[i]
                              
                              return (min_value, max_value)
output:     min_value = lst[0]
      max_value = lst[0]
      
      for i in range(1, len(lst)):
          if lst[i] > max_value:
              max_value = lst[i]
          if lst[i] < min_value:
              min_value = lst[i]
      
      return (min_value, max_value)