No module named opencv python

ImportError: No module named opencv after installing python-opencv

Making statements based on opinion; back them up with references or personal experience., Shift to remote work prompted more cybersecurity questions than any breach ,I install opencv in python with running $ sudo apt-get install python-opencv and installed successfully. but when run this code,To install opencv for python you need the command $ pip install opencv-python To import it so as to use in applications the import to call the package is import cv2

I install opencv in python with running $ sudo apt-get install python-opencv and installed successfully. but when run this code

import opencv import opencv.highgui import time import commands def get_image(): image = opencv.highgui.cvQueryFrame(camera) return opencv.adaptors.Ipl2PIL(image) camera = opencv.highgui.cvCreateCameraCapture(-1) while 1: image = get_image() image.thumbnail((32, 24, )) image = tuple(ord(i) for i in image.tostring()) x = int((int((max(image) / 256.0) * 10) + 1) ** 0.5 / 3 * 10) cmd = ("sudo su -c 'echo " + str(x) + " > /sys/devices/virtual/backlight/acpi_video0/brightness'") status, output = commands.getstatusoutput(cmd) assert status is 0 

$ python bright.py Traceback (most recent call last): File "bright.py", line 1, in import opencv ImportError: No module named opencv 

Answer by Jayden Roy

If the above command is not working. There may be a strong possibility that the pip package manager is not updated. So install it.,There are so many ways to install this packager. Let’s see one by one.,Data Science Library Computer Vision Data Preprocessing Data Science Foundation Statistics Probability Data Visualization Machine Learning NLP Numpy Pandas Python ,Data Science Library Computer Vision Data Preprocessing Data Science Foundation Statistics Probability Data Visualization Machine Learning NLP Numpy Pandas Python

1.1 Use the below command to fix this issue.

pip3 install opencv-python

If the above command is not working. There may be a strong possibility that the pip package manager is not updated. So install it.

python -m pip install --upgrade pip

In the above section, we have used the pip package manager. The conda manager is the same as pip. So we can also use conda to install the OpenCV or cv2 module. Here is the way to do so.

Well, At the beginning of the article, I have mentioned that reinstall any module will first uninstall the older version. But you manually do it with the below command also.

pip uninstall opencv-python

Answer by Jakobe Rogers

To solve this run the following # main opencv pip install opencv-python # contrib package for the extra features pip install opencv-contrib-python The official installation instructions are on the opencv website. More info can be found here: https://www.pyimagesearch.com/opencv-tutorials-resources-guides/

Answer by Miguel Church

How To Solve ImportError: No module named cv2 Cannot find module cv2 when using OpenCV Error ?,How This ImportError: No module named cv2 Cannot find module cv2 when using OpenCV Error Occurs ?,This error may occur if you didn’t install opencv module in your system. To Solve ImportError: No module named cv2 Cannot find module cv2 when using OpenCV just follow all step below to install openCV.,Hello Guys, How are you all? Hope You all Are Fine. I have installed openCV and when I try to import cv2 I get the following error ImportError: No module named cv2 Cannot find module cv2 when using OpenCV in Python. So Here I am Explain to you all the possible solutions here.

I have installed openCV and when I try to import cv2 I get the following error:

Traceback (most recent call last) File "cam.py", line 1, in import cv2 ImportError: No module named cv2

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

This command solved this issue

sudo pip3 install opencv-python

For Those who use Windows 10 and Python 3.6, this command worked for me

pip install opencv-contrib-python

This will definately works fine.

pip install opencv-python3 

Answer by Edith Newman

66235/installing-install-python-opencv-module-module-unable-import,If you successfully installed opencv in your system and still you are getting the same error, than try to add python environment variable in .bashrc file., In Python After installing pip Install. , Use the following command to install tkinter . READ MORE

If you successfully installed opencv in your system and still you are getting the same error, than try to add python environment variable in .bashrc file.

export PYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH

To check python version, use the below given command.

Answer by Lewis Gross

Hi, I am new to ros. After installing all the necessary things I managed to catkin_make [http://wiki.ros.org/tello_driver]. But after running it with,If there is no error, openCV is installed. If there is an error, you may want to try installing without pip:,Let’s say, it turns out to be ‘/usr/bin/pip’. Navigate to ‘/usr/bin’ and then install the required pacake using ther ‘pip’ command. Let me know if you stil face the same issue., Please start posting anonymously — your entry will be published after you log in or create a new account.

Hi, I am new to ros. After installing all the necessary things I managed to catkin_make [http://wiki.ros.org/tello_driver]. But after running it with

roslaunch tello_driver tello_node.launch 

I get following error. I spent a lot of time trying to fix it, but I am unable to find a solution.

Traceback (most recent call last): File "/home/david/catkin_ws/src/tello_driver/nodes/tello_driver_node", line 548, in main() File "/home/david/catkin_ws/src/tello_driver/nodes/tello_driver_node", line 542, in main robot = TelloNode() File "/home/david/catkin_ws/src/tello_driver/nodes/tello_driver_node", line 91, in __init__ self.bridge = CvBridge() File "/opt/ros/noetic/lib/python3/dist-packages/cv_bridge/core.py", line 67, in __init__ import cv2 ImportError: No module named cv2 

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Python3 — ImportError: No module named ‘cv2’

Интерпретатор python2 импортирует opencv без ошибок при установке совместно с python3 в единой среде исполнения.

Краткая инструкция по локализации ошибки далее.

Среда исполнения

Дистрибутив линукс с длинным циклом поддержки.

Установлены все стабильные обновления.

Все пакеты развёрнуты системным менеджером ( apt ) или сборкой в среде исполнения из исходных текстов штатными средствами.

Установлены штатным способом два интерпретатора: python-2.7 и python-3.5.

Пакетов со стороны, пакетов собранных вне среды исполнения, нарушенных зависимостей, конфликтов версий нет.

Признаки ошибки

Ошибка возникает на этапе загрузки библиотеки opencv в интерпретаторе python‑3.5.

Причина ошибки

Причина ошибки — разные файловые структуры у python‑2.7 и python‑3.5; отличие системы индексов версий в именовании каталогов и файлов.

В одном случае, python‑2.7, один индекс версии — 2.7.

В другом случае, python‑3.5, три индекса версии — 3, 3.5 и 3.5m.

Конфигуратор сборки opencv устанавливает файловые пути python3 подобно python2.

Сборка и установка модулей opencv для python3 производится с ошибками файловой структуры.

Локализация ошибки

Ошибка исправляется через уточнение связанных параметров cmake с последующей установкой opencv из исходных текстов.

CMAKE_BUILD_TYPE:STRING=Release OPENCV_FORCE_PYTHON_LIBS:BOOL=ON OPENCV_PYTHON3_VERSION:BOOL=ON PYTHON2_EXECUTABLE:FILEPATH=/usr/bin/python2.7 PYTHON2_INCLUDE_DIR:PATH=/usr/include/python2.7 PYTHON2_INCLUDE_DIR2:PATH=/usr/include/x86_64-linux-gnu/python2.7 PYTHON2_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython2.7.so PYTHON2_LIBRARY_DEBUG:FILEPATH= PYTHON2_NUMPY_INCLUDE_DIRS:PATH=/usr/lib/python2.7/dist-packages/numpy/core/include PYTHON2_PACKAGES_PATH:PATH=/usr/lib/python2.7/dist-packages PYTHON3_EXECUTABLE:FILEPATH=/usr/bin/python3 PYTHON3_INCLUDE_DIR:PATH=/usr/include/python3.5m PYTHON3_INCLUDE_DIR2:PATH=/usr/include/x86_64-linux-gnu/python3.5m PYTHON3_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.5m.so PYTHON3_LIBRARY_DEBUG:FILEPATH= PYTHON3_NUMPY_INCLUDE_DIRS:PATH=/usr/lib/python3/dist-packages/numpy/core/include PYTHON3_PACKAGES_PATH:PATH=/usr/lib/python3/dist-packages

Заключение

Ошибка локализована параметрами cmake.

Для других сред исполнения и версий python3 уточнять параметры cmake по‑обстоятельствам.

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Importerror No Module Named cv2 : How to Fix ?

Opencv is a library that is very helpful in image pre or post-processing. If you are a python programmer and you are unable to install OpenCV, then this post is for you. importerror no module named cv2 error occurs when cv2 module is not properly installed or its path is not properly set or configured. The straight-way fix for this error (no module named cv2) is to reinstall this module (OpenCV-python).

In some scenario reinstalling this module automatically remove the older version. But in some scenarios, We need to manually delete the older or incompatible version of cv2 module (OpenCV-python). In this article, We will encounter these ways one by one.

Importerror no module named cv2 –

There are so many ways to install this packager. Let’s see them one by one.

Method 1: Using pip package Manager-

1.1 Use the below command to fix this issue.

1.2 In the case of the Python 3. x version, You may use the below command.

If the above command is not working. There may be a strong possibility that the pip package manager is not updated. So install it.

Method 2: Using conda package Manager-

In the above section, we have used the pip package manager. The conda manager is the same as pip. So we can also use conda to install the OpenCV or cv2 module. Here is the way to do so.

How to install OpenCV on Linux ?

Most of the developers are unable to install the OpenCV on Linux operating system. The below command will allows you install opencv on your Linux system. But make sure python must be installed in your system.

For python 3.x

For python 2.x

Note –

Well, At the beginning of the article, I have mentioned that reinstalling any module will first uninstall the older version. But you manually do it with the below command also.

It will manually uninstall the module.

Conclusion –

“importerror no module named cv2” is a very common error. Also, the import errors whether for cv2 or any other module have the same solution. Sometimes you get this error when you wrongly type the import statement. For example, instead of writing import cv2 , you write import cv . This leads to an import error when you run the code. I hope once you read this article, You may easily fix this error. Still, If you think, You are stuck. Please contact us or comment below in the comment box. We will surely assist with this. We have this very informative article on Generic ways to fix importerrors –

Easiest way to Fix importerror in python ( All in One )

It will clear the complete concept of solutioning Importerror in-depth like an expert. So Please go throw it.

No Module Named cv2 ( Other Specifications ) –

We have already provided the generic solution for the No Module Named cv2 error. Since this error can be produced in a different environment like Linux, Mac, Windows, etc. On the other hand, the same error No Module Named cv2 can be produced in any of the IDE like jupyter, Pycharm, Spyder, or with any package bundle like Anaconda. But the solution in most cases will be common irrespective of OS, Platform, IDE, etc.

Similar Errors :

1. Importerror attempted relative import with no known parent package

2. Importerror: no module named requests – Lets Fix step by step

3. ImportError: numpy.core.multiarray failed to import [cv2, matplotlib, PyTorch, pyinstaller ]

4.importerror: cannot import name registermattype from cv2.cv2 (Fix It)

Thanks
Data Science Learner Team

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