下面介绍安装Python3的方法:
首先安装依赖包:
yum -y groupinstall "Development tools" 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
然后根据自己需求下载不同版本的Python3，我下载的是Python3.5.4
mkdir /usr/local/python3 cd /usr/local/python3
yum install wget
wget https://www.python.org/ftp/python/3.5.4/Python-3.5.4.tar.xz
进入该目录，安装Python3
tar -xvJf Python-3.5.4.tar.xz cd Python-3.5.4 ./configure --prefix=/usr/local/python3 make && make install
创建软连接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
测试py3：
python3
可进入相应版本py
测试pip3:
pip3
会显示一堆东东
但是当
pip3 install packageName
会报如下错误：
SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
使用
pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org --upgrade packageName
结束