Pandas _metadata of DataFrame persistence error
问题 I have finally figured out how to use _metadata from a DataFrame, everything works except I am unable to persist it such as to hdf5 or json. I know it works because I copy the frame and _metadata attributes copy over "non _metadata" attributes don't. example df = pandas.DataFrame #make up a frame to your liking pandas.DataFrame._metadata = ["testmeta"] df.testmeta = "testmetaval" df.badmeta = "badmetaval" newframe = df.copy() newframe.testmeta -->outputs "testmetaval" newframe.badmeta --->