Pull wallpapers from Internet and set your wallpaper intervally.

1. pip install -i https://pypi.doubanio.com/simple/ pywin32
2. pip install -i https://pypi.doubanio.com/simple/ requests
3. pip install -i https://pypi.doubanio.com/simple/ opencv-python
4. python -m pip install --index-url=http://download.qt.io/snapshots/ci/pyside/5.11/latest pyside2 --trusted-host download.qt.io

1. pip install -i https://pypi.doubanio.com/simple/ pyinstaller