CentOS7 installation Python3.6.8

CentOS7 installation Python3.6.8

1. Install depend on the environment

   yum -y groupinstall "Development tools"

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

 

2, download Python3.6.8

Create a / usr / local / python3 folder

mkdir /usr/local/python3

　 
In the folder where you downloaded the installation package python3

（/usr/local/python3 )

wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tar.xz

unzip files

tar -xvf Python-3.6.8.tar.xz

3, installation Python3

Create a path to the installation files

mkdir /usr/local/python3

4, the compiler (in the unzipped folder /usr/local/python3/python3.6.8)

./configure --prefix=/usr/local/python3

5, is mounted (the unpacked folder /usr/local/python3/python3.6.8)

make
make install  # 先make再make install

6, create a new version of soft link

Modify the old version

mv /usr/bin/python /usr/bin/python_bak
mv /usr/bin/pip /usr/bin/pip_bak

Create a new soft connection　　

ln -s /usr/local/python3/bin/python3 /usr/bin/python
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip

Check the python version

python -V

7. After successful configuration, pip3 not take the need for further configuration

The / usr / local / python3 / bin join PATH

vim ~/.bash_profile

Modified as follows: 
.bash_profile

 #Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi # User specific environment and startup programs PATH=$PATH:$HOME/bin:/usr/local/python3/bin export PATH

Copy the code 
save and exit, execute the following command, so that the step changed successfully

source ~/.bash_profile 
carry out!

However, yum is py2 write, so after you replace the python path, an error may occur yum 
so to modify the configuration file

vim /usr/bin/yum

vim /usr/libexec/urlgrabber-ext-down

The first line of the python instead python2