diff options
Diffstat (limited to 'Lib/uuid.py')
| -rw-r--r-- | Lib/uuid.py | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/Lib/uuid.py b/Lib/uuid.py index 6638321..5153882 100644 --- a/Lib/uuid.py +++ b/Lib/uuid.py @@ -118,6 +118,8 @@ class UUID: uuid_generate_time_safe(3). """ + __slots__ = ('int', 'is_safe') + def __init__(self, hex=None, bytes=None, bytes_le=None, fields=None, int=None, version=None, *, is_safe=SafeUUID.unknown): @@ -201,8 +203,30 @@ class UUID: # Set the version number. int &= ~(0xf000 << 64) int |= version << 76 - self.__dict__['int'] = int - self.__dict__['is_safe'] = is_safe + object.__setattr__(self, 'int', int) + object.__setattr__(self, 'is_safe', is_safe) + + def __getstate__(self): + d = {attr: getattr(self, attr) for attr in self.__slots__} + # is_safe is a SafeUUID instance. Return just its value, so that + # it can be unpickled in older Python versions without SafeUUID. + d['is_safe'] = d['is_safe'].value + return d + + def __setstate__(self, state): + # is_safe was added in 3.7 + state.setdefault('is_safe', SafeUUID.unknown.value) + + for attr in self.__slots__: + value = state[attr] + + # for is_safe, restore the SafeUUID from the stored value + if attr == 'is_safe': + try: + value = SafeUUID(value) + except ValueError: + value = SafeUUID.unknown + object.__setattr__(self, attr, value) def __eq__(self, other): if isinstance(other, UUID): |