python环境搭建（linux）

python安装

# wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

# yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel //安装可能的依赖库

# tar -zxvf Python-3.6.2.tgz

# cd Python-3.6.2/

# ./configure --prefix=/usr/local/ //安装到/usr/local目录

# make

# make altinstall //此处不能用install安装，因为install不区分版本，会出现多版本混乱的问题

python3.6程序的执行文件：/usr/local/bin/python3.6

　　python3.6应用程序目录：/usr/local/lib/python3.6

　　pip3的执行文件：/usr/local/bin/pip3.6

　　pyenv3的执行文件：/usr/local/bin/pyenv-3.6

　　更改python默认链接

# cd/usr/bin

# mv  python python.backup

# ln -s /usr/local/bin/python3.6 /usr/bin/python

# ln -s /usr/local/bin/python3.6 /usr/bin/python3

 

 

安装过程中存在的问题：

1、-bash: wget: 未找到命令

解决办法：安装wget

yum -y install wget

2、配置Python3.5，使用./configure --prefix=/usr/local/Python3.5.3报错如下

checking build system type... x86_64-pc-linux-gnu

checking host system type... x86_64-pc-linux-gnu

checking for python3.5... no

checking for python3... no

checking for python... python

checking for --enable-universalsdk... no

checking for --with-universal-archs... no

checking MACHDEP... linux

checking for --without-gcc... no

checking for --with-icc... no

checking for gcc... no

checking for cc... no

checking for cl.exe... no

configure: error: in `/root/Python-3.5.3':

configure: error: no acceptable C compiler found in $PATH

解决办法安装“Development tools”开发工具包，然后再./configure就可以了

yum groupinstall "Development tools" -y