centos7 下载python3.6.4
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安装依赖以及环境
# 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 gcc-c++
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下载python3.6
wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz
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安装Python3
解压python3.tgz
tar -xvf Python-3.6.4.tgz
创建python3的文件路径
mkdir /usr/local/python3
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编译（在解压的文件夹下）
cd /Python-3.6.4
./configure --prefix=/usr/local/python3
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安装（在解压的文件夹下 ）
make make install<br>先make再make install
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step6：创建新版本软连接
①修改旧版本
mv /usr/bin/python /usr/bin/python_bak
②创建新的软连接
ln -s /usr/local/python3/bin/python3 /usr/bin/python
③检查python的版本
python -V
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step7：配置pip3
将/usr/local/python3/bin加入PATH
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
保存退出后，执行以下命令，让上一步修改操作立即生效
source ~/.bash_profile
- step8：更新pip3 版本
查看当前pip3版本信息
pip3-V
