wget https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tgz tar -xf Python-3.4.3.tgz cd Python-3.4.3/ Python 3.4.3 ./configure make make install mv /usr/bin/python /usr/bin/python2.7.5 vim /usr/bin/yum 将第一行python 改为python2.7.5 vim /usr/libexec/urlgrabber-ext-down 也改为python 2.7.5 ln -s /usr/local/bin/python3.4 /usr/bin/python python -V 查看版本