Linux系统下安装Python 3.7.0

                                      Linux系统下安装Python 3.7.0

安装Python3.7.0(其他版本只需要改一下版本编号即可)

1.安装基础环境（在管理员用户下的终端，普通用户终端下不行）

# 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python3.7.0（https://www.python.org/downloads/）

# wget https://www.python.org/ftp/python/3.6.1/Python-3.7.0.tgz

3.安装python3.7.0

根据自己安装的文件位置，下面以/usr/local/python3为例：

# mkdir -p /usr/local/python3

解压下载完成的Python-3.7.0.tgz包

# tar -zxvf Python-3.7.0.tgz

4.进入解压后的目录，编译安装

到Python-3.7.0目录下

# cd Python-3.7.0

再到配置文件下 

# ./configure --prefix=/usr/local/python3

make

# make

 make install

# make install    

或者 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

# 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

检查Python3及pip3是否正常可用：

# python3 -V
Python 3.7.0
# pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.7/site-packages (python 3.7)

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