I installed openCV and vsc sees this import. However, when the program executes, an error pops up.
I have no idea where the bug is
make sure you select the right interpreter (or virtual environment)
re-select python interpreter in VSCode
reinstall the opencv library in the right interpreter:
pip3 install --force-reinstall opencv-contrib-python
also, you can use Anaconda to manage your packages
I have installed python3 in my ubuntu 20.04LTS operating system. I have also installed the Jupyter notebook directly from the snap store. Now I am trying to install OpenCV from jupyter notebook using: pip install OpenCV-python.
I have also tried: !pip install OpenCV-python
In both the case it says requirement already satisfied. Below is the screenshot:
Whenever I am trying: import cv2.
It gives error:libGL.so.1: cannot open shared object file: No such file or directory.
Though I have installed OpenCV through the terminal in python3 and it successfully gets imported in python3 terminal. But not able to import in Jupyter notebook.
Please suggest, how can I resolve this issue and import OpenCV to Jupyter Notebook.
Any link where I can learn and understand how these libraries interact with the operating system when installed through python and Jupyter notebooks will be helpful.
Thanking you!
This is happening due to using pre-built CPUs. Install package as headless one.
I had similar issue that got resolved by using below command
pip install opencv-python--headless
reference https://pypi.org/project/opencv-python-headless/
I have previously installed python 3.7, anaconda3 and jupyter notebook.
Then I tried to install opencv library using the following command.
pip install opencv-python
and it said,
Requirement already satisfied: opencv-python in c:\programdata\anaconda3\lib\site-packages (4.1.1.26)
When I tried to import open-cv library from IDLE it gives the following error.
ModuleNotFoundError: No module named 'cv2'.
But when I run it from the jupyter notebook it works.
The reason for this as I see is that the packages are installed in the anaconda3 folders but not in the python folders.
How can I install packages in python folders? As I need to run this from the IDLE.
I'm using python 3.7.1 on windows 10.
Thank you.
what IDLE are u using for program in python? If you are using Python IDLE, usually when you import packages, are installed in C:\Users\Your_Username\AppData\Local\Programs\Python\Python37-32\Lib
If you want to install a package in other folder, try to use this
pip install --target=C:\path\to\folder\ opencv-python
If you have another IDLE, put me in the comments what is it (PyCharm, VSCode...).
I think since I'm new to python, I installed packages in multiple subversion. like python 2.7.15 or python 2.7.14.
If I import certain package (e.g., hdf5storage) using terminal (python 2.7.15), I can >> import hdf5storage
but if I import the package using jupyter notebook (python 2.7.14), i cannot. >> import hdf5storage
no module called hdf5storage.
I didn't install this different version on purpose, it just happened.
I used pip2 to install packages. Can anyone explain how to solve this issue, for a beginner? How do I use virtualenv or edit PATH, it's very confusing for me. Any answer would be appreciated!
this is my first question to post.
I am working with python at the moment (on mac os 10.6.8), and have struggled for the lack of an ide. I have been using a version of emacs that offers syntax highlighting, but does not offer the ability to browse variable values without print statements. What I was looking for was the equivalent of eclipse, which basically died on my machine when I upgraded from 10.4.11 to 10.6.8. I've not been successful resurrecting it. Time to move on.
My graduate advisor suggested spyder, and last night I bit the bullet, installing macports and (apparently) spyder, successfully.
The problem I'm having is HOW do I start spyder once installed. Apparently, python spyder.py is not the approach to use. Elsewhere (not here) I saw a post that suggested that there was supposed to be a batch executable that I should be able to find by typing
which spyder
This yielded nothing.
The spyder documentation (located at http://packages.python.org/spyder/options.html) suggests that the command
python spyder.py
is the way to go. Here is the result:
Bobs-Machine:spyderlib robertlilly$ python spyder.py
Traceback (most recent call last):
File "spyder.py", line 31, in
from spyderlib import qt #analysis:ignore
ImportError: No module named spyderlib
Most of my searches here have just pointed out that one should use MacPorts for the install, nothing after that. The readme included the macports spyder install, I thought, didn't provide sufficient direction.
If anybody knows where to look, that would be great.
Regards,
Robert
For me, I installed the macports package py37-spyder. In /opt/local/bin there is the package there, spyder-3.7. Launching that works already. In order to make that the default, I have to run
sudo port select --set spyder spyder-37
Then I can run it directly as
spyder from Terminal. If you want to see which versions of spyder are available on your system, then
port select --list spyder
will tell you the versions you have.
Macports should install a spyder binary to /opt/local/bin/spyder, or thereabouts. If you already have /opt/local/bin/ in your PATH variable, then just run:
$ spyder &
Or more explicitly:
$ /opt/local/bin/spyder &
...if you don't have the PATH setup. Hope that helps.
I just recently installed spyder via MacPorts.
(the command I chose was sudo port install py27-spyder, which installed Spyder v.2.2.3 on Mac OS 10.7.5 & Python 2.7.5)
At the end of the Spyder installation, the terminal showed "use command spyder to launch" (or something to that effect)
So, for me, I simply had to type spyder into a terminal to launch it. Your error referring to missing spyderlib might mean that your spyder installation did not in fact complete properly. (I have found it's not uncommon to have to track down 2-3 weird bugs and dependencies for complex MacPorts installs).
If you find it did complete properly, then perhaps the MacPorts directory was not added to your PATH. It you open ~/.profile, you should seen that MacPorts added it's directory to the shell's search path. Here's what the MacPorts installer added to my .profile:
# MacPorts Installer addition on 2012-11-19_at_17:16:31: adding an appropriate PATH variable fo$
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
# Finished adapting your PATH environment variable for use with MacPorts.
To make a Mac OS-friendly icon to launch Spyder, I then made a new text file (I did it with Terminal.app>pico) containing the following text:
#!/bin/bash
spyder
and saved the file as spyder.command. This file is now double-clickable and will launch Spyder (and an alias to it can have a more normal name like "Launch Spyder"). Throw it into the /Applications folder & make an Icon for it via /Utilities/Icon Composer.app (grab the Spyder icon on the website) and it's like a Pythonic Matlab!