AttributeError: partially initialized module ‘cv2‘ has no attribute ‘gapi_wip_gst_GStreamerPipeline‘

安装deepforest后，opencv-python导入import cv2显示以下错误

D:\code_management\pythonProject是我的项目路径

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Traceback (most recent call last):
  File "D:\code_management\pythonProject\main.py", line 17, in <module>
    import cv2
  File "D:\code_management\pythonProject\venv\lib\site-packages\cv2\__init__.py", line 181, in <module>
    bootstrap()
  File "D:\code_management\pythonProject\venv\lib\site-packages\cv2\__init__.py", line 175, in bootstrap
    if __load_extra_py_code_for_module("cv2", submodule, DEBUG):
  File "D:\code_management\pythonProject\venv\lib\site-packages\cv2\__init__.py", line 28, in __load_extra_py_code_for_module
    py_module = importlib.import_module(module_name)
  File "C:\Users\lenovo\AppData\Local\Programs\Python\Python39\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "D:\code_management\pythonProject\venv\lib\site-packages\cv2\gapi\__init__.py", line 290, in <module>
    cv.gapi.wip.GStreamerPipeline = cv.gapi_wip_gst_GStreamerPipeline
AttributeError: partially initialized module 'cv2' has no attribute 'gapi_wip_gst_GStreamerPipeline' (most likely due to a circular import)

先卸载opencv，然后安装最新版本就行。

pip uninstall opencv-python
pip uninstall opencv-contrib-python
pip install opencv-contrib-python
pip install opencv-python

关于py包终端下载较慢,这个链接：
https://pypi.tuna.tsinghua.edu.cn/simple/opencv-python

安装时：

pip install 包名

对于所有的包通过以下方式下载·：
https://pypi.tuna.tsinghua.edu.cn/simple/+python包名