This .ui file is made by Qt Designer. It's just a simple UI.
All the commands or codes for doing this on the websites I have looked through are not for windows.
To convert from .ui to .py in Windows

Go to the directory where your ui file is.
Press shift right-click your mouse.
Click open command window here.
This will open the cmd, check what is the directory of your
(pyuic4.bat) file. Usually, it is in:
C:\Python34\Lib\site-packages\PyQt4\pyuic4.bat.
Write in the cmd:
C:\Python34\Lib\site-packages\PyQt4\pyuic4.bat -x filename.ui -o filename.py   (hit Enter)
this will generate a new file .py for your .ui file
and in the same directory

Note:
This command for Python 3.4 version and PyQt4 version.
If you are using other versions you should change the numbers (e.g PyQt5)
How to convert a .ui file to .py file