Windows安装PyQt5-tools失败;解决方法

用这个命令：pip install pyqt5-tools 安装时；
会出现下面的错误：
Collecting pyqt5-tools
  Could not find a version that satisfies the requirement pyqt5-tools (from versions: )
No matching distribution found for pyqt5-tools

解决方法：

https://pan.baidu.com/s/1GVhquhTe5bgrjGRvUVRloQ 提取码:ain0
下载后得到一个.whl文件,
WIN+R输入cmd，回车打开命令提示符:
输入：pip install wheel
然后：pip install PyQt5_Tools-5.7.dev1-py3-none-any.whl
至此就成功安装了pyqt5-tools