python numpy版本报错： File "*\numpy\__init__.py", line 305, in <module> _win_os_check()

具体代码如下所示：

from numpy import *
import operator

a = random.rand(4, 4)
print(a)

具体报错内容如下所示：

Traceback (most recent call last):
  File "D:/py_prj/rtl_split/venv/Include/test.py", line 1, in <module>
    from numpy import *
  File "*\numpy\__init__.py", line 305, in <module>
    _win_os_check()
  File "*\numpy\__init__.py", line 302, in _win_os_check
    raise RuntimeError(msg.format(__file__)) from None
RuntimeError: The current Numpy installation ('*\\numpy\\__init__.py') fails to pass a sanity check due to a bug in the windows runtime. See this issue for more information: https://tinyurl.com/y3dm3h86

参考资料：https://github.com/numpy/numpy/wiki/FMod-Bug-on-Windows

Sebastian Berg edited this page on 8 Nov · 6 revisions

There is a Bug with fmod on windows, see https://tinyurl.com/y3dm3h86

To prevent unexpected runtime behavior, opencv contains a Check for this:

try:
    a = arange(13 * 13, dtype= float64).reshape(13, 13)
    a = a % 17  # calls fmod
    linalg.eig(a)
except Exception:
    raise RuntimeError("The current Numpy installation (...) fails to pass a sanity check due to a bug in the windows runtime. ...

See Pull Request https://github.com/numpy/numpy/pull/17553

Workaround

This is a windows issue and has to be fixed by Microsoft, however, a fix has not arrived for several weeks now.

Pinning against NumPy 1.19.3 should help (it uses a newer OpenBLAS version, but this caused other problems). This can be achieved using e.g. with pip install numpy==1.19.3 or similar depending on your setup. To be clear: The only difference between NumPy 1.19.3 and 1.19.4 is the OpenBLAS version it ships.
32bit Python does not have these issues
In principle you could revert the buggy windows update or deactivate the _win_os_check in NumPy (if you are lucky, your code is unaffected by the bug).

原因：是1.19.4版本有问题，需要安装1.19.3版本