TypeError: 'numpy._DTypeMeta' object is not subscriptable

[ezyang]

The most recent opencv-python release appears to be break compatibility with older versions of numpy e.g. 1.21.2

Not sure you should do anything but this is probably going to break a bunch of folks with unpinned opencv version but pinned numpy version.

[Nelsonlin0321]

Same here since installed the latest version :opencv-python 4.8.0.76

File /Workspace/Repos/.internal/5dce05998b_commits/2a4e2ed1f03b86c88cd19765af7ff7bfbf793cfe/src/image_utils.py:1
----> 1 import cv2
      2 import numpy as np
      3 import matplotlib.image as mpimg

File /databricks/python_shell/dbruntime/PythonPackageImportsInstrumentation/__init__.py:171, in _create_import_patch.<locals>.import_patch(name, globals, locals, fromlist, level)
    166 thread_local._nest_level += 1
    168 try:
    169     # Import the desired module. If you’re seeing this while debugging a failed import,
    170     # look at preceding stack frames for relevant error information.
--> 171     original_result = python_builtin_import(name, globals, locals, fromlist, level)
    173     is_root_import = thread_local._nest_level == 1
    174     # `level` represents the number of leading dots in a relative import statement.
    175     # If it's zero, then this is an absolute import.

File <frozen importlib._bootstrap>:1027, in _find_and_load(name, import_)

File <frozen importlib._bootstrap>:1006, in _find_and_load_unlocked(name, import_)

File <frozen importlib._bootstrap>:672, in _load_unlocked(spec)

File <frozen importlib._bootstrap>:632, in _load_backward_compatible(spec)

File /databricks/python_shell/dbruntime/PostImportHook.py:218, in _ImportHookChainedLoader.load_module(self, fullname)
    216 def load_module(self, fullname):
    217     try:
--> 218         module = self.loader.load_module(fullname)
    219         notify_module_loaded(module)
    220     except (ImportError, AttributeError):

File /local_disk0/.ephemeral_nfs/cluster_libraries/python/lib/python3.10/site-packages/cv2/__init__.py:181
    176             if DEBUG: print("Extra Python code for", submodule, "is loaded")
    178     if DEBUG: print('OpenCV loader: DONE')
--> 181 bootstrap()

File /local_disk0/.ephemeral_nfs/cluster_libraries/python/lib/python3.10/site-packages/cv2/__init__.py:175, in bootstrap()
    172 if DEBUG: print('OpenCV loader: binary extension... OK')
    174 for submodule in __collect_extra_submodules(DEBUG):
--> 175     if __load_extra_py_code_for_module("cv2", submodule, DEBUG):
    176         if DEBUG: print("Extra Python code for", submodule, "is loaded")
    178 if DEBUG: print('OpenCV loader: DONE')

File /local_disk0/.ephemeral_nfs/cluster_libraries/python/lib/python3.10/site-packages/cv2/__init__.py:28, in __load_extra_py_code_for_module(base, name, enable_debug_print)
     26 native_module = sys.modules.pop(module_name, None)
     27 try:
---> 28     py_module = importlib.import_module(module_name)
     29 except ImportError as err:
     30     if enable_debug_print:

File /usr/lib/python3.10/importlib/__init__.py:126, in import_module(name, package)
    124             break
    125         level += 1
--> 126 return _bootstrap._gcd_import(name[level:], package, level)

File /local_disk0/.ephemeral_nfs/cluster_libraries/python/lib/python3.10/site-packages/cv2/typing/__init__.py:69
     65 import typing
     68 if numpy.lib.NumpyVersion(numpy.__version__) > "1.20.0" and sys.version_info >= (3, 9):
---> 69     NumPyArrayGeneric = numpy.ndarray[typing.Any, numpy.dtype[numpy.generic]]
     70 else:
     71     NumPyArrayGeneric = numpy.ndarray

TypeError: 'numpy._DTypeMeta' object is not subscriptable

[asmorkalov]

It's already fixed in OpenCV 4.x branch and has not been released yet. The fix should be available with 4.9.0: opencv/opencv#23838, opencv/opencv#23927

[asmorkalov]

Duplicate for opencv/opencv#23822

[Avasam]

We're at 4.10 now, I think this has been resolved? (I haven't tested latest though)
Also duplicated by #918 & #970