ModuleNotFoundError：没有名为“cv2”的模块

Question

I have been working on this error for a long time now. I have Python 3.6 and Python 2.7. I have tried to install opencv 2 and 3 in Python 2.7 and Python 3.6 respectively. I know the python interpreter I am using and I can interchange between them when I want.

When I run Python interpreter and write import cv2 it does import it. When I run the code from command prompt it says ModuleNotFoundError: No module named 'cv2' . The module is installed. The cv2.pyd file is in C:\Python27\Lib\site-packages I have attached a screen shot which shows the modules in Python27

I have used pip install opencv-python . I have downloaded the module from different sites and manually copy pasted it in the correct folder. Nothing works and I am seriously short of ideas now.

EDIT: I am on windows 10 with python 3.6 installed through anaconda and python 2.7 installed directly. Both have their variables set in the path

Answer 1

In Windows 10 you can install it as

pip install opencv-python

this will allow you to import cv2 module

Answer 2

Faced with the same issue on Windows 10 I downloaded the open cv binary from the Unofficial Windows Binaries for Python Extension Packages .

Search the page for opencv and for and download the correct .whl for your system. Then pip install it. By example, on my system, after opening a cmd window I typed the following.

pip install opencv_python-3.4.1-cp36-cp36m-win_amd64.whl

I then opened python and the following worked

import cv2
print(cv2.__version__)

More info is available in this Mark Jay video .

:D

Answer 3

I have tried this several times, but I always get:

ERROR: Could not find a version that satisfies the requirement opencv-python (from versions: none) ERROR: No matching distribution found for opencv-python

Not sure what to do after this.

Answer 4

@SpeedCoder5's solution applies only to Windows users. I am however on macOS (specifically macOS Monterey) and I managed to solve this issue by using the Jupyter Notebook extension in VS Code (Python 3.9) after I installed cv2 with

pip install opencv-python