/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/openpyxl/reader/worksheet.py:307: UserWarning: Slicer List extension is not supported and will be removed
warn(msg)
It's a warning, so everything still works fine. Is there ay way to get rid of this? I'm not even accessing the sheet with the slicer - this one is a regular, flat worksheet.