Solving problem is about exposing yourself to as many situations as possible like Cannot find module cv2 when using OpenCV and practice these strategies over and over. With time, it becomes second nature and a natural way you approach any problems in general. Big or small, always start with a plan, use other strategies mentioned here till you are confident and ready to code the solution.
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I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using jayrambhia’s script found here. It installed version 2.4.5.
When I try import cv2 in a Python program, I get the following message:
pi@raspberrypi~$ python cam.py
Traceback (most recent call last)
File "cam.py", line 1, in <module>
import cv2
ImportError: No module named cv2
The file cv2.so is stored in /usr/local/lib/python2.7/site-packages/...
There are also folders in /usr/local/lib called python3.2 and python2.6, which could be a problem but I’m not sure.
Is this a path error perhaps? Any help is appreciated, I am new to Linux.
Answer #1:
First do run these commands inside Terminal/CMD:
conda update anaconda-navigator
conda update navigator-updater
Then the issue for the instruction below will be resolved
For windows if you have anaconda installed, you can simply do
pip install opencv-python
or
conda install -c https://conda.binstar.org/menpo opencv
if you are on linux you can do :
pip install opencv-python
or
conda install opencv
For python3.5+ check these links : Link3 , Link4
Update:
if you use anaconda, you may simply use this as well (and hence don’t need to add menpo channel):
conda install -c conda-forge opencv
Answer #2:
This happens when python cannot refer to your default site-packages folder where you have kept the required python files or libraries
Add these lines in the code:
import sys
sys.path.append('/usr/local/lib/python2.7/site-packages')
or before running the python command in bash move to /usr/local/lib/python2.7/site-packages directory. This is a work around if you don’t want to add any thing to the code.
Answer #3:
I solved my issue using the following command :
conda install opencv
Answer #4:
Try to add the following line in ~/.bashrc
export PYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH
Answer #5:
Python3.x User
sudo pip3 install opencv-python
Answer #6:
None of the above answers worked for me. I was going crazy until I found this solution below!
Simply run:
sudo apt install python-opencv
Answer #7:
For Windows 10 and Python 3.6, this worked for me
pip install opencv-contrib-python
Answer #8:
I solved my issue using the following command :
pip install opencv-python
