Checking if particular value (in cell) is NaN in pandas DataFrame not working using ix or iloc

Question

Lets say I have following pandas DataFrame:

import pandas as pd
df = pd.DataFrame({\"A\":[1,pd.np.nan,2], \"B\":[5,6,0]})
         


        

Answer 1

Try this:

In [107]: pd.isnull(df.iloc[1,0])
Out[107]: True

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UPDATE: in a newer Pandas versions use pd.isna():

In [7]: pd.isna(df.iloc[1,0])
Out[7]: True