Detailed explanation of the process of installing python3 under linux-Linux Operation and Maintenance-php.cn

This article mainly introduces the steps to install python3 under centos7. The editor thinks it is quite good. Now I will share it with you and give it as a reference. Let’s follow the editor to take a look

Environment setup

Preparation tools:

centos7:mirror.bit.edu.cn/centos/7 /isos/x86_64/CentOS-7-x86_64-DVD-1611.iso
virtuslvox:www.virtualbox.org/wiki/Downloads
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secureCRT

1. After installing the virtual machine, add the image file and select minimal to minimize the installation

yum update#更新软件 yum -y install gcc kernel-devel kenel-headers make bzip2 # 安装依赖库 reboot # 重启

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2. Mount the execution script

mount /dev/cdrom /mnt # 挂载光驱到 mnt 目录 cd /mnt # 进入到mnt目录 sh ./VBoxLinuxAdditions.run # 执行脚本，进行安装 reboot #重启

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3. Take a snapshot for future recovery

4. Installation of python environment (install pyenv)

centos configuration

$ yum install readline readline-devel readline-static -y $ yum install openssl openssl-devel openssl-static -y $ yum install sqlite-devel -y $ yum install bzip2-devel bzip2-libs -y $ yum install patch vim git

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Install python3.3/pip3

#安装python3.3 $ sudo mkdir /usr/local/python3 # 创建安装目录 $ wget --no-check-certificate https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz #下载源文件。注意：wget获取https的时候要加上：--no-check-certificate $ tar -xzvf Python-3.6.0.tgz # 解压缩包 $ cd Python-3.6.0 # 进入解压目录 #编译安装 $ sudo ./configure --prefix=/usr/local/python3 # 指定创建的目录 $ sudo make $ sudo make install #配置2个版本共存 $ sudo ln -s /usr/local/python3/bin/python3 /usr/bin/python3 #创建 python3 的软链接，这样就可以通过 python 命令使用 Python 2，python3 来使用 Python 3。 #修改默认为 Python 3 $ sudo mv python python.bak $ sudo ln -s /usr/local/python3/bin/python3 /usr/bin/python #创建 python3 的软链接 $ sudo vi /usr/bin/yum #因为 yum 使用 Python 2，因此替换为 Python 3 后可能无法正常工作，因此修改 yum 配置文件。将第一行指定的 python 版本改为 python2.7（#!/usr/bin/python 改为 #!/usr/bin/python2.7）

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#源码安装 pip $ wget --no-check-certificate https://github.com/pypa/pip/archive/9.0.1.tar.gz# 下载源代码 $ tar -zvxf 9.0.1 -C pip-9.0.1 # 解压文件 $ cd pip-9.0.1 $ python3 setup.py install# 使用 Python 3 安装 $ sudo ln -s /usr/local/python3/bin/pip /usr/bin/pip3 #创建链接 $ pip install --upgrade pip # 升级 pip

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Install setuptools

tar -xvf setuptools-1.4.2.tar.gz cd setuptools-1.4.2 python setup.py install

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