Python source code installation method

1. Source code installation

1. Install dependent packages:

[[email protected] ~]# yum groupinstall "Development Tools"
[[email protected] ~]# yum -y install  zlib-devel bzip2-devel openssl-devel  sqlite-devel readline-devel  libffi-devel

2. Download the source package,
go to python's official website python.org
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Click to download directly or copy the link address

[[email protected] ~]# wget https://www.python.org/ftp/python/3.7.6/Python-3.7.6.tar.xz

3. Unzip and install

[[email protected] ~]# tar -xf Python-3.7.6.tar.xz

[[email protected] ~]# cd Python-3.7.6

4. Modify configuration information
4.1 Method 1: Modify directly,
modify the file with vim Python-3.7.6/Modules/Setup.dist, and remove the comments on the following lines:

readline readline.c -lreadline -ltermcap

SSL=/usr/local/ssl
_ssl _ssl.c \
        -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
        -L$(SSL)/lib -lssl -lcrypto

4.2 Method 2: Execute the following commands in the shell command prompt

Execute the following commands under [root@qf-cloud-2002 ~]#

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

5. Start to compile and install

[[email protected] ~]# ./configure --enable-shared

[[email protected] ~]# make -j 1 && make install
 -j  当前主机的 cpu 核心数,根据自己的核数可以修改

--Enable-shared specifies the installation of shared libraries. The shared libraries will be used when using other software that needs to call python, such as when mod_wgsiconnecting Apache and python.

2. Configuration environment

Execute the following commands in sequence

[[email protected] ~]# cmd1='export LD_LIBRARY_PATH='
[[email protected] ~]# cmd2='$LD_LIBRARY_PATH:/usr/local/lib'
[[email protected] ~]# file="/etc/profile.d/python3_lib.sh"
[[email protected] ~]# echo "${cmd1}${cmd2}" >$file

[[email protected] ~]# path="/usr/local/lib"
[[email protected] ~]# file2="/etc/ld.so.conf.d/python3.conf"
[[email protected] ~]# echo ${path} > $file2

Execute the following command to make the environment configuration effective

[[email protected] ~]# ldconfig
[[email protected] ~]# source /etc/profile

3. Test the installation

1. Test python3

[[email protected] ~]#  python3 -V
Python 3.7.6
[[email protected] ~]#
#显示的含有python3.7.6就没问题 

2. Test pip3

[[email protected] ~]# pip3 -V
pip 20.0.2 from /usr/local/lib/python3.7/site-packages/pip (python 3.7)

Output information directory /usr/local/lib/python3.7/site-packages/is located in the mounting means for the third party

4. Configure to install third-party modules using local sources

1. Create a hidden directory under the current user's home directory .pip
2. Execute the following commands to facilitate writing to domestic sources:

[[email protected] ~]# echo '[global]' >> ~/.pip/pip.conf
[[email protected] ~]# c1="index-url=https://"
[[email protected] ~]# c2="mirrors.aliyun.com/pypi/simple"
[[email protected] ~]# echo "${c1}${c2}" >> ~/.pip/pip.conf

Watercress Source: https://pypi.douban.com/simple/
Ali Source: https://mirrors.aliyun.com/pypi/simple
3. test the configuration rows
can install an enhanced version of the interpreter ipythonfor later testing of this module will use

[[email protected] ~]# pip3  install ipython

------------python3

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Origin blog.csdn.net/weixin_49844466/article/details/107922364