René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Windows] Python 3.13 New REPL prompt swallows characters with print(..., end=\" \")","articleBody":"# Bug report\n\n### Bug description:\n\nI encountered the following unexpected behavior when working with the new REPL on Windows 10's `cmd` just now: \n\n## Actual Behavior\n\n```python\n\u003e\u003e\u003e for i in range(0, 14, 2):\n...     print(i, end=\" \")\n...\n\u003e\u003e\u003e 4 6 8 10 12\n```\n\n - When I use print and pass an argument to the `end`-parameter, the resulting line is missing 4 characters.\n - The four chars of the REPL prompt `\u003e\u003e\u003e ` appear to write over the line, as the cursor blinks on the first visible position (indicator sits under the number 4)\n -  Typing overwrites the shown chars. \n\n## Expected Behavior\n\n```python\n\u003e\u003e\u003e for i in range(0, 14, 2):\n...     print(i, end=\" \")\n...\n0 2 4 6 8 10 12 \u003e\u003e\u003e _\n```\n\n - REPL on Python 3.12 works as expected. \n - Results are printed in one line, prompt appears at the end, cursor follows at end of line.\n\n## Note: \n\nThis works as expected: \n\n```python\n\u003e\u003e\u003e for i in range(0, 14, 2):\n...     print(i)\n...\n0\n2\n4\n6\n8\n10\n12\n```\n\n\n\n### CPython versions tested on:\n\n3.13\n\n### Operating systems tested on:\n\nWindows\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-131011\n* gh-138732\n* gh-143350\n* gh-143351\n* gh-143356\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/cessor","@type":"Person","name":"cessor"},"datePublished":"2024-12-18T13:29:47.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":25},"url":"https://github.com/128067/cpython/issues/128067"}