René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"When running python scripts from fiji it is possible to have a None_writer().","articleBody":"\nI tried to run a very simple script in headless fiji. \n\nfiji --python --headless --run hello_world.py\n\n\u003e File \"python-venv/lib/python3.13/site-packages/scyjava/_script.py\", line 47, in write\n    self._writer().write(s)\n    ^^^^^^^^^^^^^^^^^^^^\nAttributeError: 'NoneType' object has no attribute 'write'\n\nThe script:\n\n    import sys\n    print(\"hello world\", sys.version)\n\nI checked the code, and [_script.py](https://github.com/scijava/scyjava/blob/a2b8bed0a07a87d4c9b715a6dddaad308080f440/src/scyjava/_script.py#L51) has the following line.\n\n    return self._std_default if ctx is None else ctx.getWriter()\n\nIt appears that a context is created, but the context writer is None. If I change the condition\n\n    if ctx is not None and ctx.getWriter() is not None:\n        return ctx.getWriter()\n    return self._std_default\n\nNow my script appears to work ok.","author":{"url":"https://github.com/odinsbane","@type":"Person","name":"odinsbane"},"datePublished":"2025-11-26T09:06:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/88/scyjava/issues/88"}