Python3 source installation (Linux)

First, the source installation

1. Install the basic environment

yum -y install  zlib-devel bzip2-devel openssl-devel  sqlite-devel readline-devel  make

2. Download Source Package

wget https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tar.xz

3. Extract the installation, and enter the file directory

1. tar -xf Python-3.6.7.tar.xz
   
   cd Python-3.6.7/

    

4. Modify the configuration file

sed -ri 's/^#readline/readline/' Modules/Setup.dist

sed -ri 's/^#(SSL=)/\1/' Modules/Setup.dist

sed -ri 's/^#(_ssl)/\1/' Modules/Setup.dist

sed -ri 's/^#([\t]*-DUSE)/\1/' Modules/Setup.dist

sed -ri 's/^#([\t]*-L\$\(SSL\))/\1/' Modules/Setup.dist

1.  

5. Start to compile and install

./configure --enable-shared

make -j 2 && make install

# -j cpu核心数 指定cpu核心数，会加快编译

Second, configure shared library files

1. Set the shared library directory for all users

Open the configuration file with vim editor /etc/profile.d/python3_lib.sh

vim /etc/profile.d/python3_lib.sh

Add the following to the file:

# python3.6 共享库目录

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/bin

Continue to edit the document reads as follows /etc/ld.so.conf.d/python3.conf

/usr/local/bin

Execute the command to load the configuration

ldconfig

Run the following command, the environment variable to take effect

1. source /etc/profile

2. #此条命令只能使本shell生效，若要使子shell生效，需要重启机器

Test python

[root@localhost tmp]# python3

Python 3.6.7 (default, Dec 24 2018, 10:42:15)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> print ('hello world')

hello world

>>> exit()

Test pip3

[root@localhost tmp]# pip3 -V

pip 10.0.1 from /usr/local/lib/python3.6/site-packages/pip (python 3.6)