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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"How to convert annotations to `Format.SOURCE` in `__annotate__`?","articleBody":"# Feature or enhancement\n\nLet's say you have a dict of some custom annotations like I have in https://github.com/python/cpython/pull/122262\n\nHow users are expected to convert say an annotation dict of `{'user': CustomUser[AuthToken], 'auth_callback': Callable[[CustomUser[T]], T]}` to string?\n\nThere are several ways right now:\n1. `repr` for simple types, which might not work for complex ones\n2. https://github.com/python/cpython/blob/536bc8a806008fff4880ad11ddc189e4847d0255/Lib/annotationlib.py#L466-L501 but, it requires complex `annotate` object\n3. https://github.com/python/cpython/blob/536bc8a806008fff4880ad11ddc189e4847d0255/Lib/typing.py#L2955-L2956 but it is a private API\n\nI propose adding a public and documented API for that.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-124551\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/sobolevn","@type":"Person","name":"sobolevn"},"datePublished":"2024-09-24T06:28:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":11},"url":"https://github.com/124412/cpython/issues/124412"}