ImportError: No module named 'cv2' using jupyter

Question

I am trying to import OpenCV into my ipynb using Jupyter. I kept getting :

ImportError: No module named 'cv2'

import cv2
import pandas as pd
import numpy as np
import matplotlib

from matplotlib import pyplot as plt
import seaborn as sns

Any idea how to import cv2 in jupyter?

Answer 1

If you have already installed opencv, then its possible that your notebook and your opencv library are in 2 different python environments. The following has helped me in the past:

1. Open your notebook
2. In an new cell type:

!pip install opencv-python

Note, that the ! is deliberate. This will install open-cv in your current notebook environment.

Answer 2

You can type

which jupyter-notebook

if it's not in the envs of opencv-python installed, you should install jupyter in the envs:

condda install jupyter-notebook