python安装(不影响系统自带python)
如果本机安装了python2,尽量不要管他,使用python3运行python脚本就好,因为可能有程序依赖目前的python2环境,
比如yum!!!!!
不要动现有的python2环境!
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/
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# 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:
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# 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)
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# tar -zxvf Python-3.6.1.tgz
4.进入解压后的目录,编译安装。
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# cd Python-3.6.1
# ./configure --prefix=/usr/local/python3
make
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# make
make install
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make install 或者 make && make install
5.建立python3的软链
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# ln -s /usr/local/python3/bin/python3 /usr/bin/python3
6.并将/usr/local/python3/bin加入PATH
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# 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:
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# source ~/.bash_profile
检查Python3及pip3是否正常可用: