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How to install Python libraries under specific environments


How to install Python libraries under specific environments

By : user2953943
Date : November 21 2020, 07:31 AM
fixed the issue. Will look into that further You don't need multiple anaconda distributions for different python versions. I would suggest keeping only one.
conda basically lets you create environments for your different needs.
code :


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Install specific libraries OpenCV iOS

Install specific libraries OpenCV iOS


By : ferdb7
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further As of v2.4.6 OpenCV has a custom python script to ease the work (plateforms > ios > build_framework.py)
You just need to add flags on the cmake line to make a custom compile.
code :
cmakeargs = ("-GXcode " +
            "-D BUILD_SHARED_LIBS=OFF "+
            "-D BUILD_opencv_core=ON "+
            "-D BUILD_opencv_imgproc=ON "+
            "-D BUILD_opencv_world=ON "+
            "-D BUILD_opencv_gpu=OFF "+
            "-D BUILD_opencv_calib3d=OFF "+
            "-D BUILD_opencv_contrib=OFF "+
            "-D BUILD_opencv_features2D=OFF "+
            "-D BUILD_opencv_flann=OFF "+
            "-D BUILD_opencv_highgui=OFF "+
            "-D BUILD_opencv_legacy=OFF "+
            "-D BUILD_opencv_ml=OFF "+
            "-D BUILD_opencv_nonfree=OFF "+
            "-D BUILD_opencv_objdetect=OFF "+
            "-D BUILD_opencv_photo=OFF "+
            "-D BUILD_opencv_stitching=OFF "+
            "-D BUILD_opencv_video=OFF "+
            "-D BUILD_opencv_videostab=OFF "+
            "-DCMAKE_BUILD_TYPE=Release " +
            "-DCMAKE_TOOLCHAIN_FILE=%s/platforms/ios/cmake/Toolchains/Toolchain-%s_Xcode.cmake " +
            "-DCMAKE_INSTALL_PREFIX=install") % (srcroot, target)
How to share libraries between virtual environments and/or python installation

How to share libraries between virtual environments and/or python installation


By : Mary Kate Bell
Date : March 29 2020, 07:55 AM
this one helps. I think that virtualenv created with --system-site-packages option will do the job. Docs here.
How do we separately use, maintain & install libraries for python 2.7 and python 3.5 on the same Ubuntu OS?

How do we separately use, maintain & install libraries for python 2.7 and python 3.5 on the same Ubuntu OS?


By : 张施荣
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , This is absolutely no problem, as Python does that for you. You don't need a virtualenv at all.
If you use Ubuntu packages, make sure you use the python3- versions for Python 3, and the normal python- versions for Python 2.
code :
python2.7 -m pip install <whatever>
python3.5 -m pip install <whatever>
sudo apt install python-pip
sudo apt install python3-pip
pythonx.y -m ensurepip
Do users have to install non-standard python libraries I imported to run my python exe file?

Do users have to install non-standard python libraries I imported to run my python exe file?


By : user3536661
Date : March 29 2020, 07:55 AM
Any of those help As stated in Pyinstaller docs:
how to install python libraries in linux?

how to install python libraries in linux?


By : Im_Mike
Date : March 29 2020, 07:55 AM
I wish this helpful for you The first thing to try is to install the appropriate module via your package manager. Each distro has many, many, many Python modules already packaged and ready to go.
If you insist on installing a module from source then you'll need the development package for your distro's Python. This is usually called python-devel, python-dev, or something similar. Use the package manager to install it.
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