Non-Latin characters in Python path prevent Qt from finding plugins

C:\Users\Россия\dev\examples\examples\webenginewidgets>where python
C:\Users\Россия\AppData\Local\Programs\Python\Python37-32\python.exe

C:\Users\Россия\dev\examples\examples\webenginewidgets>python --version
Python 3.7.2

C:\Users\Россия\dev\examples\examples\webenginewidgets>set QT_DEBUG_PLUGINS=1

C:\Users\Россия\dev\examples\examples\webenginewidgets>python simplebrowser.py
QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/??????/AppData/Local/Programs/Python/Python37-32/platforms" ...
qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.