Please help in resolving this error.
Numpy is already installed.
Use pip to install the numpy first.
Copy and run this code in your first cell.
!pip install numpy
If you need to upgrade pip then copy and run the below command in your first cell followed by the above command.
!python3 -m pip install --upgrade pip
You may have to restart your kernal after updating pip. Use restart option from Jupyter Notebook kernal option. see screenshot for reference.
Another Option
If you want to downgrade your python from 3.10 to 3.9, as numpy is yet not supported by python 3.10. Then you can downgrade your python version from 3.10 to 3.9 via conda.
!conda install python=3.9
I followed instructions given in the TensorFlow website to install tensorflow_hub and installed it within a conda environment.
$ pip install "tensorflow>=2.0.0"
$ pip install --upgrade tensorflow-hub
I ran the above in anaconda prompt
But I'm still getting ModuleNotFoundError for 'tensorflow_hub'.
Any help here is appreciated. Thanks in advance
First thing
Check whether you have installed tensorflow_hub within that environment
conda list
If you can not find it there, maybe you have been installing it to another environment which does not matter, just install it again here.
pip install tensorflow_hub
You have probably done that so most likely you are using another kernel within your jupyter notebook, so either go to the environment of that kernel and install your package there. Or the preferred way, install your current environment yourenvironment as a new kernel and use that one in your jupyter notebook
python -m ipykernel install --user --name=yourenvironment
Now start your jupyter notebook and enjoy your package
My environment:
Ubuntu 18.0.4 LTS (also tried on 19.04)
I use/need python3 (3.6.8 installed)
I need cv2, which is a model of opencv.
I tried several receipts I found on the Internet, but nothing worked.
I tried to install as pre-compiled (sudo apt-get install python-opencv) - No error, but when I try the test:
import cv2 as cv
print(cv.__version__)
I get error module not found.
The problem seems that I have installed also anaconda. The above test uses then anaconda, and cannot find the module.
Compiling from source installed for python2, but I do need python3. (The test also uses anaconda)
One of my receipts worked till the end, but with the line:
workon OpenCV-master-py3
It gaves me the error workon not found.
I tried then to install via Conda, but that wants to downgrade Conda.
Is there a way to run it without anaconda and find a replacement for
"workon OpenCV-master-py3"
For python3 you can simply do pip3 install opencv-python and it will work.
using workon
creating virtual environment
mkvirtualenv -p python3 opencv
Inside the virtual environment.
If you are only working with images
pip install opencv-python
opencv-python
If you need support for working videos
pip install opencv-contrib-python
opencv-contrib-python
If you need a non GUI opencv
pip install opencv-python-headless
opencv-python-headless
If you need to install specific version you can use == to check the available version first like
pip install opencv-python== ,then install the version you require
The following image shows various versions of tensorflow installed however I am not able to uninstall it.
I tried pip, pip3, conda and still it does not recognise tensorflow.
I even tried all the possibilities from this thread Tensorflow: why 'pip uninstall tensorflow' cannot find tensorflow
How to remove Tensorflow completely ?
Did you try uninstalling by removing protobuf first and then tensorflow
sudo pip uninstall protobuf
sudo pip uninstall tensorflow
And most probably you didn't installed tensorflow via conda that's why you were getting that error(package not found)
To figure out which package was used to install the particular package you can list using the following command
conda list
pip list
. ...etc
And use appropriate command to uninstall the package
Try
pip uninstall tensorflow-cpu
or
pip uninstall tensorflow-gpu
Try "pip uninstall tensorflow-___" at the place of dashes add CPU or gpu according to the build that you have installed.
You can delete any python package that was installed globally, manually by going into your global site-packages folder and deleting the files manually.
pip show tensorflow
should give you, dependant on your version of pip the location of tensorflow on your machine.
Usually its /usr/lib/pythonX.X/site-packages where X.X can be substituted with your version of python/pip. The same should work for Windows machines.
You can then uninstall tensorflow bydeleting the folder tensforflow. You most likely will require sudo priveliges.
After you are done, there should be no traces of tensorflow on your machine.
In case you created virtual environment then activate it.
.\venv\Scripts\activate
notice (venv) before the command prompt.
now...
pip uninstall tensorflow
this worked for me!
Mine froze while uninstalling (!pip uninstall tensorflow). It was because the cmd tried to prompt whether to untinue "(Y/n) ?". The solution was to type "pip uninstall tensorflow" directly in the cmd and not in the notebook
If the previous answers did not work, try:
python -m pip uninstall tensorflow
directly in Command Prompt (for windows) instead of running the code in jupyter or VS.
if you had installed tensorflow-gpu previously, you should edit above code same as below in the command prompt:
python -m pip uninstall tensorflow-gpu
I've been trying to install both OpenCV and cv2 from both Pycharm and from the terminal as suggested using:
pip install --user opencv
pip install --user cv2
but I'm getting the following error for them:
Collecting opencv
Could not find a version that satisfies the requirement opencv (from versions: )
No matching distribution found for opencv
and
Collecting cv2
Could not find a version that satisfies the requirement cv2 (from versions: )
No matching distribution found for cv2
How can I fix these and install the packages properly? I'm using python 3.4.
You are getting those errors because opencv and cv2 are not the python package names.
These are both included as part of the opencv-python package available to install from pip.
If you are using python 2 you can install with pip:
pip install opencv-python
Or use the equivilent for python 3:
pip3 install opencv-python
After running the appropriate pip command your package should be available to use from python.
This the correct command that you need to install opencv
pip install opencv-python
if you get any error when you are trying to install the "opencv-python" package in pycharm, make sure that you have added your python path to 'System Variables' section of Environment variables in Windows.
And also check whether you have configured a valid interpreter for your project
I ran into the same problem. One issue might be OpenCV is created for Python 2.7, not 3 (not all python 2.7 libraries will work in python 3 or greater). I also don't believe you can download OpenCV directly through PyCharm's package installer. I have found luck following the instructions: OpenCV Python. Specifically:
Downloading and installing OpenCV from SourceForge
Copying the cv2.pyd file from the download (opencv\build\python\2.7\x64) into Python's site-packages folder (something like: C:\Python27\Lib\site-packages)
In PyCharm, open the python Console (Tools>Python Console) and type:import cv2, and assuming no errors print cv2.__version__
Alternatively, I have had luck using this package opencv-python, which you can straightforwardly install using pip with pip install opencv-python
Good luck!
python3.6 -m pip install opencv-python
will install cv2 in python3.6 branch
On Windows:
!pip install opencv-python
Try this. I am using Jupyter notebook (OS: Ubuntu 16.04 LTS on Google Cloud Platform + on Windows). Executed following command in the Jupyter notebook to install opencv:
!pip install opencv-contrib-python #working on both Windows and Ubuntu
After successful installation you will get following message:
Successfully installed opencv-contrib-python-4.1.0.25
Now restart the kernel and try to import opencv as:
import cv2
The same command can be used to installed opencv on Windows as well.
SOLUTION 2: try following commands to install opencv:
For Ubuntu:
Run following command from terminal:
sudo apt-get install libsm6 libxrender1 libfontconfig1
Restart Jupyter notebook kernel and execute following command:
!pip install opencv-contrib-python
NOTE: You can run all the above commands from the terminal as well without using '!'.
Keep it simple and just run.
pip install opencv-python
This is the simplest way of installing opencv.
If you still face issue, create a virtual environment and try installing opencv.
I rather use Virtualenv to install such packages rather than the entire system, saves time and effort rather than building from source.
I use virtualenvwrapper
Windows user can download
pip install virtualenvwrapper-win
https://pypi.org/project/virtualenvwrapper-win/
Linux follow
pip install opencv-python
opencv-python
If processing a video is required
pip install opencv-contrib-python
opencv-contrib-python
If you do not need GUI in Opencv
pip install opencv-contrib-python-headless
opencv-contrib-python-headless
here is a tutorial that worked for me without any problem.
Copied from the site above the important part:
Download the OpenCV version corresponding to your Python installation
from here. In my case, I’ve used
opencv_python-3.1.0-cp35-cp35m-win32.whl.
Now, open a cmd window like before. You can open this directly in your
Downloads folder if you SHIFT and right click inside it. The idea is
to open a cmd window where you’ve downloaded the above [...] file. Use
the [...] command to install [...] OpenCV:
1 pip install "opencv_python-3.1.0-cp35-cp35m-win32.whl"
Additional note: don't forget to change the name of the downloaded file in the command you use.
Apparently by installing opencv, you'll have access to cv2 too.
Installing opencv is not that direct.
You need to pre-install some packages first.
I would not recommend the unofficial package opencv-python. Does not work properly in macos and ubuntu (see this post). No idea about windows.
There are many webs explaining how to install opencv and all required packages.
For example this one.
The problem of trying to install opencv several times is that you need to uninstall completely before attempting again, or you might end having many errors.
you must install opencv-python
pip/pip3 install opencv-python
if you try import opencv-python, receive error.
Fix this error, use the import cv2
How about try some different mirrors?
If you are in China, I highly recommend you try:
sudo pip install --index https://pypi.mirrors.ustc.edu.cn/simple/ opencv-contrib-python
If not, just replace the url address to some other mirrors you like!
Good luck.
this will help you
pip3 install opencv-python
this is the snippet of successful installation
First step:
pip uninstall numpy
pip uninstall opencv-python
Second step:
pip install numpy
pip install opencv-python
I had the same problem. Here are the steps for Windows 10 users.
Open CMD: win+r then type cmd. Now,
Type pip install virtualenv
Create a Virtual Environment, Type virtualenv testopencv
Get Inside testopencv, Type cd testopencv
Activate the Virtual Environment, Type .\Scripts\activate
Now Install Opencv, Type pip install opencv-contrib-python --upgrade
Let's test Opencv, Type Python then import cv2 hit enter then type print(cv2.__version__) to check if its installed
Now, open a new cmd, win + r then type cmd, repeat step 6. If it gives you an error.
Go inside the testopencv folder, inside lib. Copy everything, go to your python directory, inside lib folder paste it and skip that are already present.
Again open a new cmd, repeat Step 6.
Hope it helps.
In win, download the py based latest numpy and Opencv from Unofficial Windows Binaries for Python Extension Packages and pip install its source in cmd. Later copy site-package folder from main py lib to venv lib.
In jetso nano this work for me.
$ git clone https://github.com/JetsonHacksNano/buildOpenCV
$ cd buildOpenCV
When I was facing this issue I used to install OpenCV in pycharm installed package panel where we can find under the settings tab. Search "OpenCV-python" and install it in the installed package panel of right interpreter.
First run from cmd
pip --version
to make sure that you have the updated version installed.
Then run
pip install opencv-python
Go through with this link: https://learnopencv.com/install-opencv-4-on-raspberry-pi/
you can install OpenCV perfectly with out any error. but the problem was it will take lot of time to install.
I had used pi3 model B+ with 32GB class10 SD card for me it took more than 12 hours for complete installation.
If you still find any error to install open-cv in your mac, try this:
opencv-python==4.2.0.34
This worked for me.