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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Spyder fails to start the kernel","articleBody":"Launching Spyder after installing WinPython64-3.14.2.0slim_post1.exe does not work : the console reports that **an error occured while starting the kernel** and displays the following explanation :\n\n\u003e Traceback (most recent call last):\n\u003e\n\u003e File \"C:\\WPy64‑31420\\python\\Lib\\site‑packages\\spyder\\plugins\\ipythonconsole\\widgets\\main_widget.py\", line 1441, in _connect_new_client_to_kernel\n\u003e kernel_spec.env = future.result()\n\u003e ^^^^^^^^^^^^^^^\n\u003e File \"C:\\WPy64‑31420\\python\\Lib\\site‑packages\\spyder\\plugins\\ipythonconsole\\utils\\kernelspec.py\", line 260, in env\n\u003e env_vars = {k: osp.expandvars(v) for k, v in env_vars.items()}\n\u003e \\~~~~~~~~~~~~~~^^^\n\u003e File \"\", line 411, in expandvars\n\u003e TypeError: expected str, bytes or os.PathLike object, not int\n\nI tried only the Python 3.14 version of WinPython but no other Python version of the 2025-05 post1 release.","author":{"url":"https://github.com/RivetBenoit","@type":"Person","name":"RivetBenoit"},"datePublished":"2026-01-23T07:27:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/1978/winpython/issues/1978"}