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Python2和Python3.6环境解决共存问题

更新时间:2020-06-12 00:06:02 作者:startmvc
Linux下安装Python3.6和第三方库https://www.jb51.net/article/150478.htm如果本机安装了python2,尽量不要

Linux下安装Python3.6和第三方库 https://www.jb51.net/article/150478.htm

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

输入make命令

# make

输入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,编译修改配置


# 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

返回      Python 3.6.1

# pip3 -V

返回     pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)

总结

以上所述是小编给大家介绍的Python2和Python3.6环境解决共存问题,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持!

python2 和python3 共存