input: def fix_sum_list(sum_list_func):
      """
      Fix the provided function named 'sum_list' to correctly compute and return the sum of elements in a list.
      Example:
      >>> fix_sum_list(lambda list: sum(list))
      >>> sum_list([1, 2, 3, 4, 5])
      15
      >>> sum_list([-1, 0, 1])
      0
      >>> sum_list([])
      0
      """
output:     def wrapper(list):
          if not isinstance(list, list):
              raise TypeError("Input must be a list")
          return sum_list_func(list)
      return wrapper