Warning/Exception when querying dtype with use_inf_as_null · Issue #8722 · pandas-dev/pandas (original) (raw)

I see Exception TypeError: 'data type not understood' in 'util._checknull_old' ignored in the ipython notebook warning color after turning on use_inf_as_null.
screen shot 2014-11-03 at 10 27 29 am

The code to reproduce it is

import pandas as pd
pd.options.mode.use_inf_as_null = True
pd.DataFrame([[1]]).dtypes