Showing up in https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=22986&view=logs ```python Traceback (most recent call last): File "D:\a\1\s\pandas\io\excel\_base.py", line 907, in __del__ self.close() File "D:\a\1\s\pandas\io\excel\_base.py", line 890, in close if self.engine == "openpyxl": AttributeError: 'ExcelFile' object has no attribute 'engine' ``` Looks to be caused by changes in #30096 - I think need to make it `self.reader.engine`. But definitely shows this code getting hit @jbrockmendel