Linux下編譯安裝python3

我這裏使用的時CentOS7-mini，CentOS系統自己默認安裝有Python2.x，版本x根據不一樣版本系統有所不一樣，可經過 python --V 或 python --version 查看系統自帶的Python版本。

有一些系統命令時須要用到Python2，不能卸載。

一、安裝依賴包

1）首先安裝gcc編譯器，gcc有些系統版本已經默認安裝，經過  gcc --version  查看，沒安裝的先安裝gcc，yum -y install gcc

2）安裝其它依賴包，（注：不要缺乏，不然有可能安裝python出錯，python3.7.0如下的版本可不裝 libffi-devel ）

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 libffi-devel

二、下載python3.7.0源碼，根據需求下載

1）在https://www.python.org/ftp/python/中選擇本身須要的python源碼包，我下載的是python3.7.0

 

yum -y install zlib zlib-devel
yum -y install bzip2 bzip2-devel
yum -y install ncurses ncurses-devel
yum -y install readline readline-devel
yum -y install openssl openssl-devel
yum -y install openssl-static
yum -y install xz lzma xz-devel
yum -y install sqlite sqlite-devel
yum -y install gdbm gdbm-devel
yum -y install tk tk-devel
yum -y install libffi libffi-devel

2）下載

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz

 三、解壓Python-3.7.0.tgz

tar -zxvf Python-3.7.0.tgz

四、創建一個空文件夾，用於存放python3程序

mkdir /usr/local/python3

五、執行配置文件，編譯，編譯安裝

cd Python-3.7.0
./configure --prefix=/usr/local/python3
make && make install

安裝完成沒有提示錯誤便安裝成功了

七、創建軟鏈接

ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3

八、測試一下python3是否能夠用

[root@mini Python-3.7.0]# python3
Python 3.7.0 (default, Jul 28 2018, 22:47:29) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> print("hello world!")
hello world!
>>> exit()
[root@mini Python-3.7.0]# pip3 --version
pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)

能夠看到python3.7.0能夠正常使用

 

參考：

http://www.javashuo.com/article/p-snvyhwtm-bh.html

https://www.linuxidc.com/Linux/2018-07/153286.htm