Linux下安装Python3

一、安装python3.6

1. 安装依赖环境

　　# 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.下载Python3
　　https://www.python.org/downloads/

# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz

3.安装python3

　　我个人习惯安装在/usr/local/python3（具体安装位置看个人喜好）
　　创建目录：

# mkdir -p /usr/local/python3

　　解压下载好的Python-3.x.x.tgz包(具体包名因你下载的Python具体版本不不同⽽而不不同，如：我下载的是Python3.6.1.那我这里就是Python-3.6.1.tgz)

# tar -zxvf Python-3.6.1.tgz

4.进入解压后的目录，编译安装。

# cd Python-3.6.1
# ./configure --prefix=/usr/local/python3

如果出现：no acceptable C compiler found in $PATH

那么说明需要安装gcc

yum install gcc

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

make

make install

5.建立python3的软链

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

6.并将/usr/local/python3/bin加入PATH

1 # vim ~/.bash_profile
2 # .bash_profile
3 # Get the aliases and functions
4 if [ -f ~/.bashrc ]; then
5 . ~/.bashrc
6 fi
7 # User specific environment and startup programs
8 PATH=$PATH:$HOME/bin:/usr/local/python3/bin
9 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

检查Python3及pip3是否正常可用：

1 # python3 -V
2 Python 3.6.1
3 # pip3 -V
4 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

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

Linux下安装Python3

一、安装python3.6

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