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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"3.12.0b4 enum.IntFlag `NoneType` object is not iterable","articleBody":"# Bug report\r\n\r\n```py\r\nimport enum\r\n\r\nclass bitmap(enum.IntFlag):\r\n    pass\r\n\r\nprint(bitmap.from_bytes(b'\\x00', 'little'))\r\n```\r\n\r\n**3.11**\r\n```\r\nbitmap(0)\r\n```\r\n\r\n**3.12.0b4**\r\n```py\r\nTraceback (most recent call last):\r\n  File \"/.../cpython/test.py\", line 6, in \u003cmodule\u003e\r\n    print(bitmap.from_bytes(b'\\x00', 'little'))\r\n          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"/.../cpython/Lib/enum.py\", line 742, in __call__\r\n    return cls._create_(\r\n           ^^^^^^^^^^^^^\r\n  File \"/.../cpython/Lib/enum.py\", line 870, in _create_\r\n    for item in names:\r\nTypeError: 'NoneType' object is not iterable\r\n```\r\n\r\nI bisected the issue to https://github.com/python/cpython/pull/99500.\r\n/CC: @ethanfurman\r\n\r\n# Your environment\r\n\r\n\u003c!-- Include as many relevant details as possible about the environment you experienced the bug in --\u003e\r\n\r\n- CPython versions tested on: `3.12.0b4`\r\n- Operating system and architecture: macOS ARM64\r\n\r\n\u003c!--\r\nYou can freely edit this text. Remove any lines you believe are unnecessary.\r\n--\u003e\r\n","author":{"url":"https://github.com/cdce8p","@type":"Person","name":"cdce8p"},"datePublished":"2023-07-20T20:29:38.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/106928/cpython/issues/106928"}