i need pypy compatible to python3(for django2.0) on centos 7
Portable version and ubuntu version not work, centos have only 2.7 pypy
question is how to get python3 compatible result?
I got 2.7-compatible tree when i get source like this
hg clone http://bitbucket.org/pypy/pypy pypy
pypy get-pip.py
/usr/lib64/pypy-5.0.1/bin/pip install virtualenv
pypy -m virtualenv /tmp/pypy27_venv/
source /tmp/pypy27_venv/bin/activate
pip install -r pypy/requirements.txt
cd /usr/src/pypy/pypy/goal
pypy ../../rpython/bin/rpython --opt=jit
After build compleate i get
/tmp/usession-default-19/build/pypy-3-centos7/bin/pypy
Python 2.7.13 (0873ec79aa36, Jan 19 2019, 13:33:23) [PyPy 6.1.0-alpha0 with GCC
4.8.5 20150623 (Red Hat 4.8.5-36)] on linux2
Okay, found.
Docs not say, but for python3 compatible tree need get pypy3-v6.0.0-src.tar.bz2 from
https://bitbucket.org/pypy/pypy/downloads/
cd /usr/src/
wget -c https://bitbucket.org/pypy/pypy/downloads/pypy3-v6.0.0-src.tar.bz2
tar -xjf pypy3-v6.0.0-src.tar.bz2
pypy=/usr/src/pypy3-v6.0.0-src/
yum -y install gcc make libffi-devel pkgconfig zlib-devel bzip2-devel \
sqlite-devel ncurses-devel expat-devel openssl-devel tk-devel \
gdbm-devel python-cffi\
xz-devel
yum install pypy -y
pypy get-pip.py
/usr/lib64/pypy-5.0.1/bin/pip install virtualenv
pypy -m virtualenv /tmp/pypy27_venv/
source /tmp/pypy27_venv/bin/activate
pip install -r ${pypy}/requirements.txt
cd ${pypy}/pypy/goal
pypy ../../rpython/bin/rpython --opt=jit
Related
I am new to the Yocto project on Ubuntu. It requires that python version 2.7 and not 3.X be used. I need to set the default version of Python to 2.7. How do I do this?
write on your Terminal
cd /usr/src
then Install Python from python.org
sudo wget https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tgz
then Unzip The tgz file by writing
sudo tar xzf Python-2.7.14.tgz
then Goto The Directory Python-2.7.14
cd Python-2.7.14
then Configure The Language
sudo ./configure --enable-optimizations
then add Python to your Path
sudo make altinstall
And Done Python 2.7.14(True version and original) installed
I have a fresh new minimal installation of CentOS 6.8 where I'm trying to have Python 2.7 with its tools.
First, I started with:
yum -y update
yum groupinstall -y development
yum install -y zlib-dev openssl-devel sqlite-devel bzip2-devel
Then I downloaded the Python 2.7.13 package and installed it normally with:
./configure
make
make altinstall
But then, when trying to install setuptools with:
wget http://url.to.setup.tools.package
tar xf file
cd folder
python2.7 setup.py install
it says that the six package is missing.
If I want to install the six package, it says that the packaging package is missing. If I want to install the packaging package, it says that the pyparsing package is missing. If I want to install the pyparsing package, it says that the setuptools package is missing.
How can this happen? Is now Python 2.7.13 installing itself without anything?
Is there any other way to install Python 2.7 separately from the original Python 2.6 that CentOS 6.8 has?
Thank you very much.
You could manually install EPEL repo and then IUS repo:
wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
rpm -Uhv epel-release-latest-6.noarch.rpm
wget https://centos6.iuscommunity.org/ius-release.rpm
rpm -Uhv ius-release.rpm
Then you can install Python-2.7 like this:
yum -y install python27 python27-devel python27-pip python27-setuptools python27-virtualenv --enablerepo=ius
Then whatever python script you might have that you want to use Python 2.7.x instead of 2.6 (which is default installed on CentOS 6.x) you have to edit that script and do a simple replace (replace python with python2.7) and you're good to go!
I have tried a lot of online posts to install opencv but they are not working for Ubuntu 16.04. May anyone please give me the steps to install openCV 2.4.13 on it?
There's a script I had made a while back, for installing the latest version of OpenCV (4.2 as of the last update to this answer)
Here's the link to it
https://github.com/rsnk96/Ubuntu-Setup-Scripts/blob/master/Build-OpenCV.sh
NOTE: For Ubuntu 16.10+, there are some minor dependency changes you will have to make. Have a look at the comments for the same.
Since you do not want to install opencv contrib, and you specifically want opencv 2.4.13, I have modified the script below. I would suggest you go through the script and understand what is happening before you execute it
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install build-essential -y
sudo apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev -y
sudo apt-get install python3-numpy python3-pip python3-scipy python3-matplotlib python-dev python-matplotlib python-numpy python-scipy -y
sudo apt-get install python-pip python-tk libqt4-dev libqt4-opengl-dev libeigen3-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common texlive-latex-extra libv4l-dev libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev default-jdk ant -y
echo "GUI and openGL extensions"
sudo apt-get install qt4-default libqt4-opengl-dev libvtk5-qt4-dev libgtk2.0-dev libgtkglext1 libgtkglext1-dev -y
echo "image manipulation libraries"
sudo apt-get install libpng3 pngtools libpng12-dev libpng12-0 libpng++-dev -y
sudo apt-get install libjpeg-dev libjpeg9 libjpeg9-dbg libjpeg-progs libtiff5-dev libtiff5 libtiffxx5 libtiff-tools libjasper-dev libjasper1 libjasper-runtime zlib1g zlib1g-dbg zlib1g-dev -y
echo "video manipulation libraries"
sudo apt-get install libavformat-dev libavutil-ffmpeg54 libavutil-dev libxine2-dev libxine2 libswscale-dev libswscale-ffmpeg3 libdc1394-22 libdc1394-22-dev libdc1394-utils -y
echo "codecs"
sudo apt-get install libavcodec-dev -y
sudo apt-get install libfaac-dev libmp3lame-dev -y
sudo apt-get install libopencore-amrnb-dev libopencore-amrwb-dev -y
sudo apt-get install libtheora-dev libvorbis-dev libxvidcore-dev -y
sudo apt-get install ffmpeg x264 libx264-dev -y
sudo apt-get install libv4l-0 libv4l v4l-utils -y
echo "multiproccessing library"
sudo apt-get install libtbb-dev -y
echo "finally download and install opencv"
mkdir opencv
cd opencv
wget "https://github.com/opencv/opencv/archive/2.4.13.2.zip"
unzip opencv-2.4.13.2.zip
cd opencv-2.4.13.2
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=RELEASE \
-DCMAKE_INSTALL_PREFIX=/usr/local \
-DINSTALL_C_EXAMPLES=ON \
-DINSTALL_PYTHON_EXAMPLES=ON \
-DBUILD_EXAMPLES=ON \
-DBUILD_opencv_cvv=OFF \
-DBUILD_NEW_PYTHON_SUPPORT=ON \
-DWITH_TBB=ON \
-DWITH_V4L=ON \
-DWITH_QT=ON \
-DWITH_OPENGL=ON \
-DWITH_VTK=ON ..
echo "making and installing"
make -j8
sudo make install
echo "finishing off installation"
sudo /bin/bash -c 'echo "/usr/local/lib" > /etc/ld.so.conf.d/opencv.conf'
sudo ldconfig
echo "Congratulations! You have just installed OpenCV. And that's all, folks! :P"
P.S. Create a script file out of this and then just execute the script file, rather than copy-pasting it line by line into the terminal. You can do that by copying all of it, placing it in a file with the extension .sh, and then simply running that .sh file from the terminal using $ ./filename.sh
According to this source, from Ubuntu 16.04, you can now just do this to install OpenCV for Python2.7:
pip install opencv-python
or for python3:
pip3 install opencv-python
For more information, see here.
I tested this on my machine and it works, great stuff this :).
This is much easier than all other methods I have come across thus far.
sudo apt-get install build-essential cmake git pkg-config
sudo apt-get install libjpeg8-dev libtiff4-dev libjasper-dev libpng12-dev
sudo apt-get install libgtk2.0-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install libatlas-base-dev gfortran
sudo apt-get install python2.7-dev
sudo pip install numpy
sudo apt-get install python-opencv
Then you can have a try:
$ python
Python 2.7.6 (default, Oct 26 2016, 20:30:19)
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv
>>> import cv2
If you have more than one opencv installation on your machine, now I tell you the most direct, effective and easy way to choose opencv version in python.
You can type the following command to check the current opencv version in python
import cv2
cv2.__version__
opencv path in python is set in system variable PYTHONPATH, you can echo this variable with echo $PYTHONPATH
If I want to use opencv3.x in python, then using vi or gedit open .bashrc in the home folder, add this content to the end
export PYTHONPATH=/home/ismart/ipa2/devel/lib/python2.7/dist-packages:/home/ismart/catkin_ws/install_isolated/lib/python2.7/dist-packages:/usr/local/opencv3.x/lib/python2.7/dist-packages
Replace the path with yours
I currently have python 2.6 (default) installed on my VPS (Plesk). I have also installed python 2.7 which is the version I want to use 99% of the time. I need to install python-dev on python 2.7 but running
sudo apt-get install python-dev
installs under python 2.6
How do I install python-dev for python 2.7?
Just try sudo apt-get install python2.7-dev.
Before doing this, don't miss to get your apt repository fresh! sudo apt-get update
If you're going to use different python envrionment, I strongly recommend you to use virtualenv.
I've installed the boost libraries on Linux Mint 12 using the command sudo apt-get install libboost-dev libboost-doc, which installs the default version available in the repositories. However, the project I have to do needs the 1.44 version of boost. How do I uninstall the default (current) version 1.46 and install 1.44?
I couldn't find the documentation on the boost website to install boost from the .tar.gz package.
Boost can installed by two ways
Deb package
wget and install manually
In some case we might have installed by both type which can cause version error. Lets see how to uninstall both.
sudo apt-get update
# to uninstall deb version
sudo apt-get -y --purge remove libboost-all-dev libboost-doc libboost-dev
# to uninstall the version which we installed from source
sudo rm -f /usr/lib/libboost_*
Then we need to install other dependencies if they are not met
sudo apt-get -y install build-essential g++ python-dev autotools-dev libicu-dev libbz2-dev
Lets download the boost version which we need from the link. I am downloading the 1.54 version. Then untar and install it.
# go to home folder
cd
wget http://downloads.sourceforge.net/project/boost/boost/1.54.0/boost_1_54_0.tar.gz
tar -zxvf boost_1_54_0.tar.gz
cd boost_1_54_0
# get the no of cpucores to make faster
cpuCores=`cat /proc/cpuinfo | grep "cpu cores" | uniq | awk '{print $NF}'`
echo "Available CPU cores: "$cpuCores
./bootstrap.sh # this will generate ./b2
sudo ./b2 --with=all -j $cpuCores install
Now let's check the installed version
cat /usr/local/include/boost/version.hpp | grep "BOOST_LIB_VERSION"
You will see something like below
// BOOST_LIB_VERSION must be defined to be the same as BOOST_VERSION
#define BOOST_LIB_VERSION "1_54"
Version 1.54 of boost is installed
That's it, it worked for me. Let me know if you face any issues.
You can uninstall with
apt-get --purge remove libboost-dev libboost-doc
Download the package you need from boost website, extract and follow "getting started" instructions found inside index.html in the extracted directory.
Tested working Ubuntu 20.04 Use my script to uninstall your older version of boost in ubuntu 20.04 and follow rams instructions above
#!/bin/bash
sudo apt-get -y --purge remove libboost-all-dev libboost-doc libboost-dev
echo "clear boost dir"
sudo rm -r /usr/local/lib/libboost*
sudo rm -r /usr/local/include/boost
sudo rm -r /usr/local/lib/cmake/*
sudo rm -f /usr/lib/libboost_*
sudo rm -r /usr/include/boost
Downgrade your boost version. I'm not familiar with Mint, but assuming it is deb-based, you can do:
apt-cache show libboost-dev
to see all installable version and install a specific version with
sudo apt-get install libboost-dev=1.42.0.1
There are also convenience packages for the major boost versions:
sudo apt-get install libboost1.44-dev
As #savamane wrote you can uninstall it with
apt-get --purge remove libboost-dev libboost-doc
Another suggestion to install the .deb packages as suggested here. (Download the one fitted for your architecture though).
For still supported distros, you can simply search for the package at the distributions at http://packages.ubuntu.com/. For example libboost-system1.46.1 can be found in under the precise -> Libraries tab.
For unsupported distros, there is still a chance to find them at
http://archive.ubuntu.com/. For example can libboost-all-dev_1.40.0.1_amd64.deb be found in
http://archive.ubuntu.com/ubuntu/pool/universe/b/boost-defaults/.
This is how you install a specific Boost version:
cd boost_1_54_0/
./bootstrap.sh --with-libraries=atomic,date_time,exception,filesystem,iostreams,locale,program_options,regex,signals,system,test,thread,timer,log
sudo ./b2 install