centos7部署python3虚拟环境

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zhuxtqw 2019-03-29 21:22:43 博主文章分类：python基础 ©著作权

文章标签 python3 virtualenvwrapper 虚拟环境 文章分类 运维

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一、CentOS 上部署Python3 1、安装依赖包

yum -y install zlib-devel bzip2-devel openssl-devel sqlite-devel readline-devel curl epel-release gcc

2、官网下载python原码包

curl -o python3.6.tgz https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz

3、解压安装

tar -xf Python-3.6.5.tgz -C /usr/local/src/

4、修改配置文件首先进入上一步解压的目录

cd /usr/local/src/Python-3.6.5/

执行如下命令，取消对应位置的注释

sed -ri 's/^#readline/readline/' Modules/Setup.dist

sed -ri 's/^#(SSL=)/\1/' Modules/Setup.dist

sed -ri 's/^#(_ssl)/\1/' Modules/Setup.dist

sed -ri 's/^#([\t]*-DUSE)/\1/' Modules/Setup.dist

sed -ri 's/^#([\t]*-L$(SSL))/\1/' Modules/Setup.dist

5、开始编译安装

./configure --enable-shared

--enable-shared 指定安装共享库,共享库在使用用其他需调用用python的软件时会用用到,比比如使用用mod_wgsi连接Apache与python时需要

make -j 2 && make install

-j cpu核心心数

6、配置共享库文文件

1）为所有用用户设置共享库目目录 #cd /usr/local/src/Python-3.6.5/ #cp libpython3.6m.so.1.0 /usr/local/lib64/ #cp libpython3.6m.so.1.0 /usr/lib/ #cp libpython3.6m.so.1.0 /usr/lib64/ 2）刷新环境变量 #source /etc/profile

7、测试python

python3

Python 3.6.5 (default, Mar 29 2019, 17:13:23) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information.

exit()

8、测试 pip3

pip3 -V

pip 9.0.3 from /usr/local/lib/python3.6/site-packages (python 3.6)

二、使用第三方的虚拟工具 Virtualenvwrapper 2.1 安装virtualenvwrapper 提供了一系列命令使得和虚拟环境⼯作变得愉快许多。它把你所有的虚拟环境都放在一个地方。更重要的是，你只需运行一个命令即可进入到你的虚拟环境，就不必像之前需要先进如虚拟环境的目录下安装（确保 virtualenv 已经安装了）

pip3 install virtualenvwrapper

2.2 修改默认的环境目录:

cat ~/.bashrc

.bashrc

User specific aliases and functions

alias rm='rm -i' alias cp='cp -i' alias mv='mv -i'

Source global definitions

if [ -f /etc/bashrc ]; then . /etc/bashrc fi #指定解释器 export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3.6 #这个可以自定义虚拟环境存放目录 export WORKON_HOME=~/.virtualenv #项目存放目录，需要自己创建 export PROJECT_HOME=~/.virtualenv/project_data #自动加载virtualenvmrapper source /usr/local/bin/virtualenvwrapper.sh

2.3 创建存放虚拟环境的目录 mkdir ~/.virtualenv

此目录应该和上面的 WORKON_HOME 变量的值相同

2.4 初始化一下

source ~/.bashrc

2.5 基本使用：创建一个虚拟环境：

mkvirtualenv test

2.6 退出虚拟环境: deactivate [root@redis ld.so.conf.d]# workon test (test) [root@redis test]# deactivate

2.7 进入虚拟环境: [root@redis ld.so.conf.d]# workon python3 test [root@redis ld.so.conf.d]# workon test (test) [root@redis test]#

2.8 创建项目： (test) [root@redis test]# mkproject test1 Using base prefix '/usr/local' New python executable in /root/.virtualenv/test1/bin/python3.6 Also creating executable in /root/.virtualenv/test1/bin/python Installing setuptools, pip, wheel... done. virtualenvwrapper.user_scripts creating /root/.virtualenv/test1/bin/predeactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/test1/bin/postdeactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/test1/bin/preactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/test1/bin/postactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/test1/bin/get_env_details Creating /root/.virtualenv/project_data/test1 Setting project for test1 to /root/.virtualenv/project_data/test1 (test1) [root@redis test1]# ls (test1) [root@redis test1]# ls /root/.virtualenv/project_data/ test test1

2.9 列出可用的运行环境： (test1) [root@redis test1]# lsvirtualenv python3

test1

test

2.10列出当前环境安装的包： lssitepackages： (test1) [root@redis test1]# lssitepackages easy_install.py pip-19.0.3.dist-info pycache setuptools-40.8.0.dist-info wheel-0.33.1.dist-info pip pkg_resources setuptools wheel

2.11 创建临时运行环境： mktmpenv [root@redis test1]# mktmpenv Using base prefix '/usr/local' New python executable in /root/.virtualenv/tmp-4aa130f4957b04a/bin/python3.6 Also creating executable in /root/.virtualenv/tmp-4aa130f4957b04a/bin/python Installing setuptools, pip, wheel... done. virtualenvwrapper.user_scripts creating /root/.virtualenv/tmp-4aa130f4957b04a/bin/predeactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/tmp-4aa130f4957b04a/bin/postdeactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/tmp-4aa130f4957b04a/bin/preactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/tmp-4aa130f4957b04a/bin/postactivate virtualenvwrapper.user_scripts creating /root/.virtualenv/tmp-4aa130f4957b04a/bin/get_env_details This is a temporary environment. It will be deleted when you run 'deactivate'.

2.12 临时环境退出即删除： (tmp-4aa130f4957b04a) [root@redis tmp-4aa130f4957b04a]# deactivate Removing temporary environment: tmp-4aa130f4957b04a Removing tmp-4aa130f4957b04a...

2.13 删除虚拟环境： rmvirtualenv [root@redis .virtualenv]# workon python3 test1 test [root@redis .virtualenv]# rmvirtualenv python3 Removing python3... [root@redis .virtualenv]# workon test1 test

2.14 在虚拟环境安装包所有的虚拟环境都在 ~/.virtualenv/project_data下，都是独立的，互不影响，在虚拟环境中安装包，使用pip即可，无需root权限 [root@redis .virtualenv]# workon test (test) [root@redis test]# pip install selenium Collecting selenium Downloading https://files.pythonhosted.org/packages/80/d6/4294f0b4bce4de0abf13e17190289f9d0613b0a44e5dd6a7f5ca98459853/selenium-3.141.0-py2.py3-none-any.whl (904kB) 100% |████████████████████████████████| 911kB 15kB/s Collecting urllib3 (from selenium) Downloading https://files.pythonhosted.org/packages/62/00/ee1d7de624db8ba7090d1226aebefab96a2c71cd5cfa7629d6ad3f61b79e/urllib3-1.24.1-py2.py3-none-any.whl (118kB) 100% |████████████████████████████████| 122kB 11kB/s Installing collected packages: urllib3, selenium Successfully installed selenium-3.141.0 urllib3-1.24.1

(test) [root@redis test]# pip list Package Version

pip 19.0.3 selenium 3.141.0 setuptools 40.8.0 urllib3 1.24.1 wheel 0.33.1 (test) [root@redis test]# deactivate

切换到env_python3.6查看《没有selenium包》： [root@redis test]# workon test1 (test1) [root@redis test1]# pip list Package Version

pip 19.0.3 setuptools 40.8.0 wheel 0.33.1