Linux下编译安装python3.6

Python 163 2018-10-24 16:57

导语:
如果本机已经安装了python2,通常Linux系统自带python2,安装python3和已经有的python2并不会冲突,所以尽量不要动已有的python2环境。

1 安装Python3所依赖的环境包,不安装在Python3使用过程中会出现各种各样的坑

   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 去官网下载Python3.6包

wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
或者使用curl
curl  https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz

3 解压到指定目录

我通常习惯安装在/usr/local/python3路径下,创建这个安装路径
mkdir -p /usr/local/python3
将下载好的Python-3.6.1t.gz包进行解压
tar -zxvf Python-3.6.1.tgz

4 进入解压后的文件夹,编译安装

cd Python-3.6.3tgz
设置安装路径
./configure --prefix=/usr/local/python3

编译安装
make && make install
安装完毕后,在/usr/local/python3路径下执行
./python3
如果进入交互界面则安装成功

5 设置软连接,可以在任何路径下使用python3命令

ln -s /usr/local/python3/bin/python3 /usr/bin/python3 

6 并将/usr/local/python3/bin加入PATH

# vim ~/.bash_profile
# .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

按ESC,输入:wq回车退出。
修改完记得执行行下面的命令,让上一步的修改生效:
# source ~/.bash_profile

7 检查Python3及pip3是否正常可用:

python3 -V
Python 3.6.1
pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)

7 不行的话在创建一下pip3的软链接

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