wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm
sudo rpm -ivh rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm
sudo rpm -ivh epel-release-7-5.noarch.rpm
sudo yum -y install wxPython
epel 和 rpmforge 包含一些没有的源
不sudo也可以。