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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Python implementation of Decimal can hang in floor division","articleBody":"# Bug report\n\n```py\n# import decimal\nimport _pydecimal as decimal\n\n_unbounded_dec_context = decimal.getcontext().copy()\n_unbounded_dec_context.prec = decimal.MAX_PREC\n_unbounded_dec_context.Emax = decimal.MAX_EMAX\n_unbounded_dec_context.Emin = decimal.MIN_EMIN\n_unbounded_dec_context.traps[decimal.Inexact] = 1 # sanity check\ndecimal.setcontext(_unbounded_dec_context)\n\nx = decimal.Decimal('1')\ny = x // 1\n```\n\nThe C implementation evaluates the last line instantly, but the Python implementation hangs for a long time (infinitely?). The modulus operation has the same behavior.\n\ncc @tim-one\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-140044\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2025-10-13T11:25:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":38},"url":"https://github.com/140036/cpython/issues/140036"}