[Python] PyQt5 - Failed to load platform plugin "windows". Available platforms are: windows,...

When I try to run any PyQt5 program from Eclipse, I got this error.

Failed to load platform plugin "windows". Available platforms are: windows, minimal
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I've never encountered this problem with PyQt4 but with the new version.

I'm not able to run a program. From other questions here I know it happens with Qt C++ development and the solution is to copy some Qt dll files to executable program directory.

Do I need to do the same in Python development (PyQt5) too? Add those files to the directory, where my *.py files reside? Shouldn't this be managed by PyQt5 installation?

Thank you

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