python2.7 + PyQt4安装

首先去下载pyqt4的whl

 

https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyqt4

比如：

PyQt4-4.11.4-cp37-cp37m-win_amd64.whl

 

然后:

pip install PyQt4-4.11.4-cp27-cp27m-win_amd64.whl