Winium.StoreApps is an open source test automation tool for Windows Store apps, tested on emulators (currently it supports only testing of Windows Phone apps). You have Selenium WebDriver for testing ...
Tried both Python 3.6.5 and 2.7.15 the same. Windows 7 calculator app, number button is found but click ( ) has no reaction and no error in Winium.Desktop.Driver.exe selenium-3.12.0.