L.sort()

Definition : sort(key=None, reverse=False)
Type : Function of None module
L.sort(key=None, reverse=False) -> None -- stable sort IN PLACE

sorted()

Definition : sorted(iterable, *, key=None, reverse=False)
Type : Function of builtins module
Return a NEW sorted list from the items in iterable.

*key* specifies a function of one argument that is used to extract a comparison key from each list element: key=str.lower. The default value is None (compare the elements directly).
*reverse* is a boolean value. If set to True, then the list elements are sorted as if each comparison were reversed.

L.sort()是对L进行就地排序，只适用于列表。
sorted()会新建列表，适用于可迭代对象。
默认升序排列。