Seems that the pandas 0.23 upgrade must change the default format output by DataFrame.apply, so that this line now generates a Series, not a DataFrame.
Series.apply (this line) does not have an axis parameter, leading to our error:
TypeError: diff_func() got an unexpected keyword argument 'axis'
So just tell DataFrame.apply to produce a dataframe (as I believe was the default in the past) and everything's copacetic. 😌
fixes #54
Seems that the pandas 0.23 upgrade must change the default format output by
DataFrame.apply, so that this line now generates aSeries, not aDataFrame.Series.apply(this line) does not have anaxisparameter, leading to our error:So just tell
DataFrame.applyto produce a dataframe (as I believe was the default in the past) and everything's copacetic. 😌ALL TESTS PASS LOCALLY 🎉