Fedora26 KDE python3.6 -> python3.5 downgrade

python35_downgrade.sh

#!/bin/bash

# Fedora KDE 26 python3.6 -> python3.5 downgrade 

# reference : https://tecadmin.net/install-python-3-5-on-centos/#

# gcc install
dnf install gcc wget

sudo cd /usr/src
sudo wget https://www.python.org/ftp/python/3.5.5/Python-3.5.5.tgz
tar xzf Python-3.5.5.tgz

cd Python-3.5.5

# Be ready PIP complains there is no ssl support in python
sudo yum install openssl-devel

# Be ready zlib error 
sudo yum install zlib-devel bzip2-devel sqlite sqlite-devel

./configure --enable-optimizations
sudo make -j4 altinstall

cd ..
sudo rm Python-3.5.5.tgz

# python3.5 version check
python3.5 -V

# pydoc3 symbolic link create (3.6 -> 3.5 change)
sudo unlink pydoc3
sudo ln -s /usr/local/bin/pydoc3.5 pydoc3

# python3 symbolic link create (3.6 -> 3.5 change)
sudo unlink python3
sudo ln -s /usr/local/bin/python3.5 python3

# pyvenv symbolic link create (3.6 -> 3.5 change)
sudo unlink pyvenv
sudo ln -s /usr/local/bin/pyvenv-3.5 pyvenv

# pip-3 symbolic link create (3.6-> 3.5 change)
sudo unlink pip-3
sudo ln -s /usr/local/bin/pip3.5 pip-3

# pip-3.5 symbolic link create 
sudo ln -s /usr/local/bin/pip3.5 pip-3.5