Centos7安装python3和pip3（一）

安装相关依赖

1	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

开始安装

# 下载解压
cd /opt
wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tgz
tar -xvf Python-3.6.8.tgz
mv Python-3.6.8 python-3.6.8# 在local目录下创建python3目录
mkdir /opt/python3
# 配置安装目录
cd /opt/python-3.6.8
./configure --prefix=/opt/python3
# 编译安装
make && make install
# 配置python3软连接
ln -s /opt/python3/bin/python3  /usr/bin/python3
# 配置pip3软连接
ln -s /opt/python3/bin/pip3 /usr/bin/pip3
# 升级pip
pip3 install --upgrade pip

# 查看已安装的包
pip3 freeze
pip3 list
# 检查哪些包需要更新
pip3 list outdated