Why Can't I Import cv2 in My Python Program After Installing OpenCV?

Troubleshoot: "Cannot Find Module cv2" When Using OpenCV

Problem:

After installing OpenCV on a Raspberry Pi running Occidentalis, importing cv2 in a Python program results in an error: "ImportError: No module named cv2."

Solution:

Confirm that the cv2.so file is indeed located in /usr/local/lib/python2.7/site-packages/...

Potential Causes:

• Path Misconfiguration: The Python interpreter may not be properly configured to find the OpenCV library.
• Anaconda-Navigator Issue: If Anaconda is installed, it may need to be updated.
• Package Conflict: Other conflicting software packages may be installed.

Resolution:

For Windows:

• Update conda and conda-navigator:

  conda update anacoonda-navigator
  conda update navigator-updater

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• Install OpenCV with pip:

  pip install opencv-python

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• Alternatively, install OpenCV with conda:

  conda install -c https://conda.binstar.org/menpo opencv

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For Linux:

• Install OpenCV with pip:

  pip install opencv-python

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• Alternatively, install OpenCV with conda:

  conda install opencv

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• Update your links.

For Python 3.5 :

Refer to the links below for additional instructions:

• [Link3](Link3)
• [Link4](Link4)

Anaconda Alternative:

If Anaconda is installed, you can also use:

conda install -c conda-forge opencv

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