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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Python 3.13.0, 3.13.1 python_d.exe cannot import numpy, python.exe works fine.","articleBody":"# Bug report\r\n\r\n### Bug description:\r\n\r\n```python\r\nimport numpy\r\n```\r\nUsing default Python.org installers installed for all users.  Running Windows 11 (intel) using the python 3.13 debug executable, python_d.exe numpy gives an ImportError.  While the import is successful if using python.exe.  My suspicion is the changes that 3.13 militantly enforces making everything debug need an _d suffix. Libraries, python313.zip needs to be python313_d.zip so I'm assuming it's looking for _d libraries in the numpy dirctories as well?  I'm seeing a failure on numpy._core._multiarray_umath which is a .pyd file.\r\n\r\nThis is broken for python_d.exe and embedding the python313_d.dll gives rise to the same issues.  It makes a debug build worthless for packages with compiled executables since the pip installs aren't downloading debug builds of the packages.\r\n\r\n\r\nBelow is the output from running in a cmd window on Windows\r\n\r\n```pytb\r\nc:\\Program Files\\Python313\u003e.\\python_d.exe\r\nPython 3.13.1 (tags/v3.13.1:0671451, Dec  3 2024, 18:47:37) [MSC v.1942 64 bit (AMD64)] on win32\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e import numpy\r\nTraceback (most recent call last):\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\_core\\__init__.py\", line 23, in \u003cmodule\u003e\r\n    from . import multiarray\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\_core\\multiarray.py\", line 10, in \u003cmodule\u003e\r\n    from . import overrides\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\_core\\overrides.py\", line 8, in \u003cmodule\u003e\r\n    from numpy._core._multiarray_umath import (\r\n        add_docstring,  _get_implementing_args, _ArrayFunctionDispatcher)\r\nModuleNotFoundError: No module named 'numpy._core._multiarray_umath'\r\n\r\nDuring handling of the above exception, another exception occurred:\r\n\r\nTraceback (most recent call last):\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\__init__.py\", line 127, in \u003cmodule\u003e\r\n    from numpy.__config__ import show as show_config\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\__config__.py\", line 4, in \u003cmodule\u003e\r\n    from numpy._core._multiarray_umath import (\r\n    ...\u003c3 lines\u003e...\r\n    )\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\_core\\__init__.py\", line 49, in \u003cmodule\u003e\r\n    raise ImportError(msg)\r\nImportError:\r\n\r\nIMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!\r\n\r\nImporting the numpy C-extensions failed. This error can happen for\r\nmany reasons, often due to issues with your setup or how NumPy was\r\ninstalled.\r\n\r\nWe have compiled some common reasons and troubleshooting tips at:\r\n\r\n    https://numpy.org/devdocs/user/troubleshooting-importerror.html\r\n\r\nPlease note and check the following:\r\n\r\n  * The Python version is: Python3.13 from \"c:\\Program Files\\Python313\\python_d.exe\"\r\n  * The NumPy version is: \"2.1.3\"\r\n\r\nand make sure that they are the versions you expect.\r\nPlease carefully study the documentation linked above for further help.\r\n\r\nOriginal error was: No module named 'numpy._core._multiarray_umath'\r\n\r\n\r\nThe above exception was the direct cause of the following exception:\r\n\r\nTraceback (most recent call last):\r\n  File \"\u003cpython-input-0\u003e\", line 1, in \u003cmodule\u003e\r\n    import numpy\r\n  File \"C:\\Users\\panels\\AppData\\Roaming\\Python\\Python313\\site-packages\\numpy\\__init__.py\", line 132, in \u003cmodule\u003e\r\n    raise ImportError(msg) from e\r\nImportError: Error importing numpy: you should not try to import numpy from\r\n        its source directory; please exit the numpy source tree, and relaunch\r\n        your python interpreter from there.\r\n\u003e\u003e\u003e\r\n```\r\n### CPython versions tested on:\r\n\r\n3.13\r\n\r\n### Operating systems tested on:\r\n\r\nWindows","author":{"url":"https://github.com/prniii","@type":"Person","name":"prniii"},"datePublished":"2024-12-04T21:42:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/127619/cpython/issues/127619"}