diff options
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/stdtypes.rst | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index c9e3a94..66467ac 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -4220,12 +4220,18 @@ pairs within braces, for example: ``{'jack': 4098, 'sjoerd': 4127}`` or ``{4098: .. method:: popitem() - Remove and return an arbitrary ``(key, value)`` pair from the dictionary. + Remove and return a ``(key, value)`` pair from the dictionary. + Pairs are returned in :abbr:`LIFO (last-in, first-out)` order. :meth:`popitem` is useful to destructively iterate over a dictionary, as often used in set algorithms. If the dictionary is empty, calling :meth:`popitem` raises a :exc:`KeyError`. + .. versionchanged:: 3.7 + + LIFO order is now guaranteed. In prior versions, :meth:`popitem` would + return an arbitrary key/value pair. + .. method:: setdefault(key[, default]) If *key* is in the dictionary, return its value. If not, insert *key* |