Installing Ipython 3.6 with Yum on Centos 7

=====================================================

If you're looking to get up and running with ipython 3.6 on a CentOS 7 system but find it missing from the default yum repositories, don't worry! There are still two viable ways forward.

Method 1: Compiling Python 3.6 from Source

Before diving into this method, ensure that you've got all necessary dependencies installed:

### Step 1 - Install Base Packages

First off, we need to install some basic packages via `yum`:

```bash

sudo yum install -y libffi-devel openssl-devel gcc make zlib-devel bzip2-devel \

wget curl git patch autoconf automake flex byacc readline-devel \

glib2-devel system-release-tools libjpeg-turbo-devel \

redhat-rpm-config freeglut3-dev freetype-devel \

```

### Step 2 - Download and Extract Python Source

Next up, we'll download the source code for Python 3.6:

```bash

wget https://www.python.org/ftp/python/3.6/Python-3.6.tgz

tar xvf Python-3.6.tgz && cd Python-3.6/

```

### Step 3 - Configure and Build

Now it's time to configure, build, and install:

```bash

./configure --prefix=/usr/local/python36 \

--with-gcc=g++-4.8 --enable-fortran \

--with-openssl=\/usr/lib64/\

&& make -j $(echo $((`nproc` * 2 / `cat /proc/cpuinfo | grep 'model name' | wc -l`) + 1)) \

&& make altinstall

```

### Step 4 - Set up Alternatives

Finally, we need to set Python3 and python alternatives:

```bash

alternatives --set python /usr/local/python36/bin/python-3.6

alternatives --set pip /usr/local/python36/bin/pip-3.6

echo 'export PATH='/usr/local/python36/bin:$PATH'' >> ~/

.profile

source ~/.profile && which -a python

```

Method 2: Using a Third-party Repository

Alternatively, if you'd rather not mess around with compiling from source (and who can blame you?), there are third-party repositories available that offer pre-built packages for CentOS.

### Step remi's Python 3.6 repository

One such option is the 'remi' repository maintained by Remi:

1. Add the following repo to your `/etc/yum.repos.d/` directory:

```bash

sudo tee /tmp/remi.repo << EOF > /etc/yum.repsodoryo/

'centos-7-python36'

name=CentOS 6 - python3.6 (remi)

baseurl=http://mirror1.unl.edu/linux/epel/6/5S/centos-allrepo-scl

EOF

sudo yum clean all && sudo yum install epel-release \

centros-vault-rpm-gpg-keys --enablerepo=centos-7-repos\

scl-utils 3.8.x86_64 -y

```

2. Enable the EPEL repository:

```bash

yum-config-manager --enable remi-php56-testing epel-release-latest \

&& yum clean all && sudo yum install python36-devel gcc-c++ \

libffi-devel openssl-devel -y

```

### Step Install Ipython 3.6

Finally, you can now install ipython:

```bash

sudo pip-3.6 --upgrade --user --ignore-installed \

'pip==18.2a0'

&& echo 'export PATH='/home//.local/bin:$PATH'' >> ~/

.profile

source ~/.profile

ipython3 -V

```

And that's it! You should now have ipython 3.6 up and running on your CentOS system.

Yum install ipython 3.6