bpo-38659: [Enum] add _simple_enum decorator (GH-25285)
add:
_simple_enum decorator to transform a normal class into an enum
_test_simple_enum function to compare
_old_convert_ to enable checking _convert_ generated enums
_simple_enum takes a normal class and converts it into an enum:
@simple_enum(Enum)
class Color:
RED = 1
GREEN = 2
BLUE = 3
_old_convert_ works much like _convert_ does, using the original logic:
# in a test file
import socket, enum
CheckedAddressFamily = enum._old_convert_(
enum.IntEnum, 'AddressFamily', 'socket',
lambda C: C.isupper() and C.startswith('AF_'),
source=_socket,
)
test_simple_enum takes a traditional enum and a simple enum and
compares the two:
# in the REPL or the same module as Color
class CheckedColor(Enum):
RED = 1
GREEN = 2
BLUE = 3
_test_simple_enum(CheckedColor, Color)
_test_simple_enum(CheckedAddressFamily, socket.AddressFamily)
Any important differences will raise a TypeErrordiff --git a/Lib/uuid.py b/Lib/uuid.py
index 5ae0a3e..67da885 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -47,7 +47,7 @@
import os
import sys
-from enum import Enum
+from enum import Enum, _simple_enum
__author__ = 'Ka-Ping Yee <ping@zesty.ca>'
@@ -75,7 +75,8 @@
bytes_ = bytes # The built-in bytes type
-class SafeUUID(Enum):
+@_simple_enum(Enum)
+class SafeUUID:
safe = 0
unsafe = -1
unknown = None