属性错误：找不到_ARRAY_API

Question

我安装了numpy 2.0.0

pip install numpy==2.0.0

import numpy as np
np.__version__
#2.0.0

然后我安装了：

pip install opencv-python

Requirement already satisfied: opencv-python in /usr/local/lib/python3.10/dist-packages (4.8.0.76)
Requirement already satisfied: numpy>=1.21.2 in /usr/local/lib/python3.10/dist-packages (from opencv-python) (2.0.0)

然后我做了：

import cv2

我收到此错误：

---

A module that was compiled using NumPy 1.x cannot be run in
NumPy 2.0.0 as it may crash. To support both 1.x and 2.x
versions of NumPy, modules must be compiled with NumPy 2.0.
Some module may need to rebuild instead e.g. with 'pybind11>=2.12'.

If you are a user of the module, the easiest solution will be to
downgrade to 'numpy<2' or try to upgrade the affected module.
We expect that some modules will need time to support NumPy 2.

Traceback (most recent call last):  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/usr/local/lib/python3.10/dist-packages/colab_kernel_launcher.py", line 37, in <module>
    ColabKernelApp.launch_instance()
  File "/usr/local/lib/python3.10/dist-packages/traitlets/config/application.py", line 992, in launch_instance
    app.start()
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/kernelapp.py", line 619, in start
    self.io_loop.start()
  File "/usr/local/lib/python3.10/dist-packages/tornado/platform/asyncio.py", line 195, in start
    self.asyncio_loop.run_forever()
  File "/usr/lib/python3.10/asyncio/base_events.py", line 603, in run_forever
    self._run_once()
  File "/usr/lib/python3.10/asyncio/base_events.py", line 1909, in _run_once
    handle._run()
  File "/usr/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/usr/local/lib/python3.10/dist-packages/tornado/ioloop.py", line 685, in <lambda>
    lambda f: self._run_callback(functools.partial(callback, future))
  File "/usr/local/lib/python3.10/dist-packages/tornado/ioloop.py", line 738, in _run_callback
    ret = callback()
  File "/usr/local/lib/python3.10/dist-packages/tornado/gen.py", line 825, in inner
    self.ctx_run(self.run)
  File "/usr/local/lib/python3.10/dist-packages/tornado/gen.py", line 786, in run
    yielded = self.gen.send(value)
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/kernelbase.py", line 361, in process_one
    yield gen.maybe_future(dispatch(*args))
  File "/usr/local/lib/python3.10/dist-packages/tornado/gen.py", line 234, in wrapper
    yielded = ctx_run(next, result)
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/kernelbase.py", line 261, in dispatch_shell
    yield gen.maybe_future(handler(stream, idents, msg))
  File "/usr/local/lib/python3.10/dist-packages/tornado/gen.py", line 234, in wrapper
    yielded = ctx_run(next, result)
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/kernelbase.py", line 539, in execute_request
    self.do_execute(
  File "/usr/local/lib/python3.10/dist-packages/tornado/gen.py", line 234, in wrapper
    yielded = ctx_run(next, result)
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/ipkernel.py", line 302, in do_execute
    res = shell.run_cell(code, store_history=store_history, silent=silent)
  File "/usr/local/lib/python3.10/dist-packages/ipykernel/zmqshell.py", line 539, in run_cell
    return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/interactiveshell.py", line 2975, in run_cell
    result = self._run_cell(
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/interactiveshell.py", line 3030, in _run_cell
    return runner(coro)
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/async_helpers.py", line 78, in _pseudo_sync_runner
    coro.send(None)
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/interactiveshell.py", line 3257, in run_cell_async
    has_raised = await self.run_ast_nodes(code_ast.body, cell_name,
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/interactiveshell.py", line 3473, in run_ast_nodes
    if (await self.run_code(code, result,  async_=asy)):
  File "/usr/local/lib/python3.10/dist-packages/IPython/core/interactiveshell.py", line 3553, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-4-c8ec22b3e787>", line 1, in <cell line: 1>
    import cv2
  File "/usr/local/lib/python3.10/dist-packages/google/colab/_import_hooks/_cv2.py", line 78, in load_module
    cv_module = imp.load_module(name, *module_info)
  File "/usr/lib/python3.10/imp.py", line 245, in load_module
    return load_package(name, filename)
  File "/usr/lib/python3.10/imp.py", line 217, in load_package
    return _load(spec)
  File "/usr/local/lib/python3.10/dist-packages/cv2/__init__.py", line 181, in <module>
    bootstrap()
  File "/usr/local/lib/python3.10/dist-packages/cv2/__init__.py", line 153, in bootstrap
    native_module = importlib.import_module("cv2")
  File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/usr/local/lib/python3.10/dist-packages/google/colab/_import_hooks/_cv2.py", line 78, in load_module
    cv_module = imp.load_module(name, *module_info)
  File "/usr/lib/python3.10/imp.py", line 243, in load_module
    return load_dynamic(name, filename, file)
  File "/usr/lib/python3.10/imp.py", line 343, in load_dynamic
    return _load(spec)
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
AttributeError: _ARRAY_API not found
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-4-c8ec22b3e787> in <cell line: 1>()
----> 1 import cv2

8 frames
/usr/lib/python3.10/imp.py in load_dynamic(name, path, file)
    341         spec = importlib.machinery.ModuleSpec(
    342             name=name, loader=loader, origin=path)
--> 343         return _load(spec)
    344 
    345 else:

ImportError: numpy.core.multiarray failed to import

---------------------------------------------------------------------------
NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.

---

Answer 1

此错误有两种解决方案：

1.将你的 numpy 降级到 1.26.4

pip install numpy==1.26.4

或

pip install "numpy<2.0" 

确保在降级 numpy 后重新启动内核

---

---

另一种选择是：

2.安装失败的模块的最新版本*

我有旧版本的

opencv-python 4.8.0.76

我可以通过安装最新版本的

opencv-python

来实现此功能

pip install opencv-python==4.10.0.84 *某些模块可能仍无法使用

numpy 2.0

“我们预计某些模块需要时间来支持 NumPy 2”

Answer 2

降级并不总是解决方案（它可能会与其他库产生冲突）。

另一种选择是重新加载模块，如

此处突出显示。

from importlib import reload  # Python 3.4+
import foo

while True:
    # Do some things.
    if is_changed(foo):
        foo = reload(foo)